feat(solid): [WIP] Add wrapper implementation for SolidJS as @superdoc-dev/solid

[msviderok]

Summary

Adds SolidJS wrapper package @superdoc-dev/solid.

This PR introduces a Solid-native SuperDocEditor component which is practically identical to @superdoc-dev/react with the only differences being the framework-specific lifecycle/state management parts.

What Changed

• Added packages/solid as a new workspace package
• Implemented SuperDocEditor for SolidJS
• Copied and adjusted all the .md and config files to match packages/react
• Added Solid-specific TypeScript types derived from the core superdoc constructor config
• Copied and modified SuperDocEditor.test.tsx from `packages/react to keep the tests intact in terms of logic/behaviour/visual aspects
• Added semantic-release config and scripts/publish-solid.cjs for publishing @superdoc-dev/solid
• Updated workspace/catalog dependencies and lockfile with the Solid-related packages

What differs from packages/react

• Miscellaneous files:
  • "find-and-replace"-ed React to Solid
  • changed examples in .md files to adhere to Solid practices
• src/utils:
  • the only utility needed is shallowJsonEqual due to fine-grained reactivity of Solid negating the need for the rest of React-specific ones
  • test file is unnecessary as the original one didn't cover shallowJsonEqual

Testing

• Added packages/solid/src/SuperDocEditor.test.tsx
• Solid package can be tested with:

pnpm --filter @superdoc-dev/solid test

⚠️ For some reason, SuperDocEditor.test.tsx testsuite passes but with a post-error. Currently, I'm in progress resolving this issue, related to: discord conversation

TypeError: Cannot read properties of undefined (reading 'state')
 ❯ createCommentForTrackChanges ../superdoc/dist/superdoc.es.js:3455:30
    3453|    }
    3454|   });
    3455|   const { tr } = editor.view.state;
       |                              ^
    3456|   tr.setMeta(CommentsPluginKey, { type: "force" });
    3457|   editor.view.dispatch(tr);
 ❯ bootstrapImportedTrackedChangeComments ../superdoc/dist/superdoc.es.js:3333:3
 ❯ Timeout._onTimeout ../superdoc/dist/superdoc.es.js:3383:4
 ❯ listOnTimeout node:internal/timers:605:17
 ❯ processTimers node:internal/timers:541:7

Test Files  1 passed (1)
      Tests  20 passed | 3 skipped (23)
     Errors  12 errors