Add support for language server settings and initialization options (#6)

This update lets the user configure PowerShellEditorServices settings in
the Zed settings.json file like this:

```
"languages": {
    "PowerShell": {
      "inlay_hints": {
        "enabled": true,
      },
      "formatter": "language_server",
      "format_on_save": "on",
    },
  },
"lsp": {
    "powershell-es": {
      "settings": {
        "powershell": {
          "codeFormatting": {
            "openBraceOnSameLine": true,
            "addWhitespaceAroundPipe": true,
            "trimWhitespaceAroundPipe": true,
            "ignoreOneLineBlock": true,
          },
        },
      },
    },
  },

```

---------

Co-authored-by: MrSubidubi <dev@bahn.sh>

Author: gravejester

Cargo.lock

@@ -1,5 +1,5 @@
 [package]
-name = "powershell"
+name = "zed_powershell"
 version = "0.4.0"
 edition = "2021"
 

Cargo.toml

@@ -1,17 +1,43 @@
-# PowerShell extension for Zed editor
+# PowerShell support for Zed
 
-## Setting up language server
+This extension provides syntax highlighting as well as language server support for PowerShell files
 
-Currently, the extension didn't support automatic installation (it'll soon land). You need
-to set the bundle path through `lsp` configuration:
+## Configuring your language server
+
+The extension requires PowerShell to be available in your environment. If that is the case,
+the extension will auto-download the language server and start it.
+
+If you wish to specify a custom path to your language server, you can do so via your settings:
 
 ```json
 {
-  "lsp": {
-    "powershell-es": {
-      "binary": {
-        "path": "<path to PowerShellEditorServices>"
-      }
+    "lsp": {
+        "powershell-es": {
+            "binary": {
+                "path": "<path to PowerShellEditorServices>"
+            }
+        }
     }
-  }
 }
+```
+
+Additionally, you can configure settings for your language server as well as initialization options
+to pass to the language server on start.
+
+An example for this:
+
+```json
+"lsp":{
+   "powershell-es":{
+      "settings":{
+         "powershell":{
+            "codeFormatting":{
+               "openBraceOnSameLine":true,
+               "addWhitespaceAroundPipe":true,
+               "trimWhitespaceAroundPipe":true,
+               "ignoreOneLineBlock":true
+            }
+         }
+      }
+   }
+```

README.md

@@ -1,5 +1,6 @@
 use std::env;
 use std::fs;
+use zed_extension_api::settings::LspSettings;
 use zed_extension_api::{self as zed, Result};
 
 struct PowerShellExtension {
@@ -56,6 +57,24 @@ impl zed::Extension for PowerShellExtension {
             env: Default::default(),
         })
     }
+
+    fn language_server_initialization_options(
+        &mut self,
+        language_server_id: &zed_extension_api::LanguageServerId,
+        worktree: &zed_extension_api::Worktree,
+    ) -> zed_extension_api::Result<Option<zed_extension_api::serde_json::Value>> {
+        LspSettings::for_worktree(language_server_id.as_ref(), worktree)
+            .map(|settings| settings.initialization_options)
+    }
+
+    fn language_server_workspace_configuration(
+        &mut self,
+        language_server_id: &zed_extension_api::LanguageServerId,
+        worktree: &zed_extension_api::Worktree,
+    ) -> zed_extension_api::Result<Option<zed_extension_api::serde_json::Value>> {
+        LspSettings::for_worktree(language_server_id.as_ref(), worktree)
+            .map(|settings| settings.settings)
+    }
 }
 
 impl PowerShellExtension {