feat(lsp): auto-register blink.cmp client capabilities

[unlimitedsola]

Closes #615

I'm fairly new to this, so please let me know if extending both capabilities on top of each other when both are available is really a good idea :)

[github-actions]

Review Checklist

Does this PR follow the Contribution Guidelines? Following is a partial checklist:

Proper conventional commit scoping:

• For example, fix(lsp): some lsp-related bugfix

• Pull request title has the appropriate conventional commit prefix.

If applicable:

• Tested
  • Tests have been added.
  • Tested manually (Steps to reproduce in PR description).
• Updated documentation.

[mrcjkb]

LGTM

please let me know if extending both capabilities on top of each other when both are available is really a good idea :)

I think it ought to be fine. Using both plugins at the same time is probably not a good idea anyway.