feat(lsp): add Deno.test ignore and only code actions (#34861)
Adds LSP refactor code actions for toggling Deno.test ignore and only
state on basic and object-style test definitions.
Covers simple Deno.test(name, fn) conversion, object literal property
insertion, existing ignore/only boolean toggles, and
Deno.test.ignore/only unfocusing back to Deno.test.
Closes #15862
Closes denoland/divybot#464
Co-authored-by: divybot <divybot@users.noreply.github.com>
Co-authored-by: Divy Srivastava <me@littledivy.com>
