build: add manifest.json schema validation and linting tools

lib/node_modules/@stdlib/_tools/lint/manifest-json/README.md

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+<!--
+
+@license Apache-2.0
+
+Copyright (c) 2026 The Stdlib Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+   http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+-->
+
+# Lint
+
+> Lint `manifest.json` files.
+
+<section class="usage">
+
+## Usage
+
+```javascript
+var lint = require( '@stdlib/_tools/lint/manifest-json' );
+```
+
+#### lint( \[options,] clbk )
+
+Asynchronously lints `manifest.json` files.
+
+```javascript
+lint( done );
+
+function done( error, errs ) {
+    if ( error ) {
+        throw error;
+    }
+    if ( errs ) {
+        console.dir( errs );
+    } else {
+        console.log( 'Success!' );
+    }
+}
+```
+
+The function accepts the following `options`:
+
+-   **dir**: root directory from which to search for manifest.json files. May be either an absolute file path or a path relative to the current working directory. Default: current working directory.
+-   **pattern**: glob pattern used to find manifest.json files. Default: `'**/@stdlib/**/manifest.json'` (note: pattern **must** end with `manifest.json`).
+-   **ignore**: list of glob patterns used to exclude matches.
+
+To search from an alternative directory, set the `dir` option.
+
+```javascript
+var opts = {
+    'dir': '/foo/bar/baz'
+};
+
+lint( opts, done );
+
+function done( error, errs ) {
+    if ( error ) {
+        throw error;
+    }
+    if ( errs ) {
+        console.dir( errs );
+    } else {
+        console.log( 'Success!' );
+    }
+}
+```
+
+To provide an alternative include filter, set the `pattern` option.
+
+```javascript
+var opts = {
+    'pattern': '**/@stdlib/math/**/manifest.json'
+};
+
+lint( opts, done );
+
+function done( error, errs ) {
+    if ( error ) {
+        throw error;
+    }
+    if ( errs ) {
+        console.dir( errs );
+    } else {
+        console.log( 'Success!' );
+    }
+}
+```
+
+To exclude matches, set the `ignore` option.
+
+```javascript
+var opts = {
+    'ignore': [
+        'node_modules/**',
+        'build/**',
+        'reports/**'
+    ]
+};
+
+lint( opts, done );
+
+function done( error, errs ) {
+    if ( error ) {
+        throw error;
+    }
+    if ( errs ) {
+        console.dir( errs );
+    } else {
+        console.log( 'Success!' );
+    }
+}
+```
+
+#### lint.sync( \[options] )
+
+Synchronously lints `manifest.json` files.
+
+```javascript
+var errs = lint.sync();
+if ( errs ) {
+    console.dir( errs );
+} else {
+    console.log( 'Success!' );
+}
+```
+
+The function accepts the same `options` as `lint()` above.
+
+</section>
+
+<!-- /.usage -->
+
+<section class="notes">
+
+</section>
+
+<!-- /.notes -->
+
+<section class="examples">
+
+## Examples
+
+<!-- eslint no-undef: "error" -->
+
+```javascript
+var lint = require( '@stdlib/_tools/lint/manifest-json' );
+
+lint( done );
+
+function done( error, errs ) {
+    if ( error ) {
+        throw error;
+    }
+    if ( errs ) {
+        console.dir( errs );
+    } else {
+        console.log( 'Success!' );
+    }
+}
+```
+
+</section>
+
+<!-- /.examples -->
+
+* * *
+
+<section class="cli">
+
+## CLI
+
+<section class="usage">
+
+### Usage
+
+```text
+Usage: lint-manifest-json [options] [dir]
+
+Options:
+
+  -h,    --help                Print this message.
+  -V,    --version             Print the package version.
+         --pattern pattern     Inclusion glob pattern.
+         --ignore pattern      Exclusion glob pattern.
+         --format format       Output format: ndjson, pretty.
+         --split sep           Separator used to split stdin data. Default: /\\r?\\n/.
+```
+
+</section>
+
+<!-- /.usage -->
+
+<section class="notes">
+
+### Notes
+
+-   If part of a [standard stream][standard-stream] pipeline, results are written to `stdout` as newline-delimited JSON ([NDJSON][ndjson]). Otherwise, results are pretty printed by default.
+
+-   If not provided a `dir` argument, the current working directory is the search directory.
+
+-   To provide multiple exclusion glob patterns, set multiple `--ignore` option arguments.
+
+    ```bash
+    $ lint-manifest-json --ignore=node_modules/** --ignore=build/** --ignore=reports/**
+    ```
+
+-   If the split separator is a [regular expression][regexp], ensure that the `split` option is properly **escaped**.
+
+    ```bash
+    # Not escaped...
+    $ <stdout> | lint-manifest-json --split /\r?\n/
+
+    # Escaped...
+    $ <stdout> | lint-manifest-json --split /\\r?\\n/
+    ```
+
+-   If provided a list of filenames via `stdin`, each filename is resolved relative to the current working directory. To specify an alternative directory, provide a `dir` argument.
+
+</section>
+
+<!-- /.notes -->
+
+<section class="examples">
+
+### Examples
+
+```bash
+$ lint-manifest-json
+
+/path/to/manifest.json
+
+    message: should have required property 'confs'
+    field: .
+    data: {"options":{},"fields":[]}
+
+1 errors
+```
+
+To output results as newline-delimited JSON ([NDJSON][ndjson]),
+
+```bash
+$ lint-manifest-json --format ndjson
+{"file":"...","errors":[...]}
+{"file":"...","errors":[...]}
+...
+```
+
+To use as a part of a [standard stream][standard-stream] pipeline,
+
+```bash
+$ echo -n $'./manifest.json' | lint-manifest-json
+...
+```
+
+</section>
+
+<!-- /.examples -->
+
+</section>
+
+<!-- /.cli -->
+
+<!-- Section for related `stdlib` packages. Do not manually edit this section, as it is automatically populated. -->
+
+<section class="related">
+
+</section>
+
+<!-- /.related -->
+
+<!-- Section for all links. Make sure to keep an empty line after the `section` element and another before the `/section` close. -->
+
+<section class="links">
+
+[ndjson]: http://ndjson.org/
+
+[regexp]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions
+
+[standard-stream]: https://en.wikipedia.org/wiki/Pipeline_%28Unix%29
+
+</section>
+
+<!-- /.links -->