feat: inline const for leaf modules

[ahabhgk]

Summary

Pre-PR for enum inlining

ref: evanw/esbuild@7bf3046

This PR only handle the cross-module part of const inlining, the idea is very similar to mangle exports:

1. Add inlinable on export_info, which is similar to can_mangle, and add UsedName::Inlined for inlined value and UsedName::Normal for maybe mangled names
2. Add inline_const parser plugin to find all the inlinable const variable, and "tag" it to tell the ESMExportSpecifierDependency that this exported value is inlinable

How to use:

{
  module: {
    rules: [{
      test: ...,
      parser: {
        inlineConst: false // use parser options to opt-out
      }
    }]
  },
  experiments: {
    inlineConst: true // enable the experimental switch
  }
}

Checklist

• Tests updated (or not required).
• Documentation updated (or not required update in future PR).

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[codspeed-hq]

CodSpeed Performance Report

Merging #10451 will not alter performance

_{Comparing const-inlining (3262cf1) with main (265fafe)}

Summary

✅ 12 untouched benchmarks

[ahabhgk]

CodSpeed regression is caused by extra get_used_name, will optimize the perf of get_used_name in future PR