✨ Add missing theme tokens

### Description

We currently have "Types" and "Variables" theme tokens. We should replace these two with "Types Declarations", "Type Names", "Variable Declarations", "Variable Names". There are also several more that we might add...

- `classNames`
- `typeDeclarations`
- `typeNames`
- `variableDeclarations`
- `variableNames`
- `functionDeclarations`
- `functionNames`
- `propertyNames`
- `constants`
- `parameterNames`
- `moduleNames`
- `namespaceNames`
- `preprocessorMacros`
- `enumMembers`
- `annotations`

If we added these, the complete token list would look like this...

- `text`
- `background`
- `insertionPoint`
- `lineHighlight`
- `selection`
- `invisibles`
- `keywords`
- `classNames`
- `types`
- `typeDeclarations`
- `typeNames`
- `attributes`
- `commands`
- `values`
- `constants`
- `numbers`
- `strings`
- `characters`
- `variableDeclarations`
- `variableNames`
- `propertyNames`
- `parameterNames`
- `functionDeclarations`
- `functionNames`
- `moduleNames`
- `namespaceNames`
- `enumMembers`
- `preprocessorMacros`
- `annotations`
- `comments`

### Additional Context

In Xcode, class names, function names, type names, etc. are differentiated between “Project” and “Other”. This helps developers quickly see what’s part of their project vs. an external dependency, making it easier to navigate complex projects, identify ownership of code, and make refactoring decisions. Is this something we want to implement as well?

We also need to update all of our bundled themes to include these tokens.

該 issue 沒有指出檔案或測試；首先定位 theme-token 定義和內建的 theme 資源，然後將現有的 Types 和 Variables 項目與提議的 token 清單進行比較。完成的標準是：實作所要求的 token、依指定內容取代舊項目，並確保所有內建的 theme 都包含更新後的 token。

由索引模型根據 Issue 內容生成。