chore: add logo, license, and version badges to all package READMEs

[pyramation]

Summary

Standardizes README headers across all packages in the monorepo so every package has the Constructive logo, CI status badge, MIT license badge, and npm version badge.

Changes by category:

• 25 packages — added full header block (logo + all 3 badges) where none existed: functions/*, graphile/{connection-filter,misc-plugins,postgis,search,sql-expression-validator,upload-plugin}, graphql/{env,playwright-test,test-app,types}, jobs/* (10 packages), packages/{cli,smtppostmaster}, pgpm/env, sdk/constructive-node
• 5 packages — added missing badge <p> block to READMEs that already had the logo: pgpm/logger, postgres/pg-env, sdk/constructive-{cli,react,sdk}
• 2 packages — updated stale launchql/launchql references to constructive-io/constructive: graphile/graphile-cache, packages/csv-to-pg
• 1 package — replaced supatest.svg with outline-logo.svg: postgres/supabase-test

Non-package directories (docker/, jobs/ root) were intentionally skipped (no package.json).

Review & Testing Checklist for Human

• SDK auto-generated READMEs: sdk/constructive-cli, sdk/constructive-react, and sdk/constructive-sdk contain <!-- DO NOT EDIT --> codegen markers. Verify the next cnc codegen run won't strip the newly added badge block, or decide if the codegen template itself should be updated instead.
• supabase-test logo: Confirm replacing supatest.svg with outline-logo.svg is desired — the original may have been an intentionally distinct logo for that package.
• csv-to-pg link text: The blanket launchql/launchql → constructive-io/constructive replacement also affected display text in markdown links (e.g., launchql/launchql-gen → constructive-io/constructive-gen). Verify the link labels still read correctly.
• Spot-check a few badge URLs render correctly on GitHub (version badges use ?filename=<url-encoded-path> — confirm shields.io resolves them).

Notes

• Docs-only change — no code, build, or runtime impact.
• docker/README.md and jobs/README.md (directory-level, no package.json) were intentionally left unchanged.
• The root README.md was also left as-is (it already has logo + CI + license + deepwiki badges; no npm version badge since it's not published).

Link to Devin session: https://app.devin.ai/sessions/0f858efb5df0421794225008cf8da72a
Requested by: @pyramation

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