Fixes to things

[kaleidawave]

• Flatten some of the files around poly_types / generics
• Add test for JSX
• Add tests for optional parameters (default value is undefined)
• Add test for variable and type shadowing
• Add some more Console methods
• Fix array subtyping issues #134
• Add class method lifting for rest parameters
• Fix JSX children and template literal array length
• Wrap contributors and sponsors lines
• Update some dependencies
• Fix name in github-release.yml
• Fix ezno check to print warnings (fixed where it only printed diagnostics if there was errors)
• Added test for type mappings
• Less panics in partial syntax (+ new test)
• Subtyping example
• More RangeMap methods
• Rename utils to utilities (in checker)

Couldn't get the to the bottom of diagnostic emit overhead. Leaving for later

[kaleidawave]

Now not cloning sources and reusing the &str source when printing diagnostics. But hasn't really touched the dial.

 Summary
    Warning: Ignoring non-zero exit code.
    ./target/release/ezno check demo.ts --count-diagnostics ran
      1.05 ± 0.07 times faster than ./target/release/ezno check demo.ts --compact-diagnostics
      2.40 ± 0.12 times faster than ./target/release/ezno check demo.ts

Moving on

• Printing ~160 issues isn't a common case
• Can use --count-diagnostics or --compact-diagnostics in those cases
• Might be overhead in codespan_reporting library or just the fact that printing a lot of lines to the console is expensive

[kaleidawave]

On the ongoing quest to figure why the diagnostics emit takes 60% of ezno check time on the total specification

• Trying replacing dynamic dispatch with static dispatch: https://github.com/kaleidawave/codespan/commit/ba6851bbcac82f85e0d103bfffa89142cc66fac5
• Results don't show a clear win 🤷‍♂️ https://github.com/kaleidawave/benchmarks/actions/runs/8751617511

Going to try on this branch later, maybe trying more complex diagnostics will show a change?