Migrate from references to context for codecompanion.nvim tools.

[Davidyz]

Following upstream changes here: olimorris/codecompanion.nvim#1891

Refactor the codecompanion tools to use the context API.

I tried my best to make sure the tools are compatible with both chat.references and chat.context. The support for the old API will be removed once the upstream PR is released.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.77%. Comparing base (65ca748) to head (adaae18).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #259   +/-   ##
=======================================
  Coverage   99.77%   99.77%           
=======================================
  Files          24       24           
  Lines        1767     1767           
=======================================
  Hits         1763     1763           
  Misses          4        4           

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[Davidyz]

@olimorris I skimmed through your PR, and it looks like it's mostly just renaming references to context. The query tool in VectorCode uses references to exclude files that are already sent to the LLM for deduplication. Is there something else that I should take care of?

[olimorris]

Yep it's just a naming refactor from references to context