Refactor: Move JSON range calculation logic to language-json
- Created new `src/language-json/get-format-ranges.js` with JSON-specific logic
- Added `getFormatRanges` generator function that accepts node ancestors and yields format ranges
- Moved `isJsonSourceElement` function to language-json module
- Updated `src/main/range.js` to delegate JSON range calculation to language-json
- Removed `jsonSourceElements` and `findCommonAncestor` from main range.js
- All tests passing
Co-authored-by: fisker <172584+fisker@users.noreply.github.com>
