Improve TypeScript task detection (#31711)

Parses project's package.json to better detect Jasmine, Jest, Vitest and
Mocha and `test`, `build` scripts presence.
Also tries to detect `pnpm` and `npx` as test runners, falls back to
`npm`.


https://github.com/user-attachments/assets/112d3d8b-8daa-4ba5-8cb5-2f483036bd98

Release Notes:

- Improved TypeScript task detection

Cargo.lock

@@ -8934,6 +8934,7 @@ dependencies = [
  "async-compression",
  "async-tar",
  "async-trait",
+ "chrono",
  "collections",
  "dap",
  "futures 0.3.31",
@@ -8987,6 +8988,7 @@ dependencies = [
  "tree-sitter-yaml",
  "unindent",
  "util",
+ "which 6.0.3",
  "workspace",
  "workspace-hack",
 ]