feat: implement syntax highlighting for .jref files#13
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- Added grammar contribution to client package.json - Configured `source.jref` to inherit from `source.json` to mimic JSON syntax highlights
- Now ref values are highlighted as functions
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Summary
This PR introduces a Semantic Tokens Provider to enhance the visual clarity of
.jreffiles. The handler uses theSymbolTableinfrastructure to extract ref nodes, and colors pointers independently of the standard JSON TM grammar.Key Changes
/package.jsonto addgrammarcontribution./syntaxes/jref.tmlanguage.jsonthat just includes thejsongrammar.server.tscontributions and registered the semantic token handler .semanticTokens.tsto provide token highlight for reference values.ServerContextinterface to util.ts since now it is also used by the semantic tokens handler.