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

crates/language/src/language.rs

@@ -64,7 +64,7 @@ use std::{
 use std::{num::NonZeroU32, sync::OnceLock};
 use syntax_map::{QueryCursorHandle, SyntaxSnapshot};
 use task::RunnableTag;
-pub use task_context::{ContextProvider, RunnableRange};
+pub use task_context::{ContextLocation, ContextProvider, RunnableRange};
 pub use text_diff::{
     DiffOptions, apply_diff_patch, line_diff, text_diff, text_diff_with_options, unified_diff,
 };