feat(engine-js): improve performance for some languages

[slevithan]

• Updates oniguruma-to-es to v2.2.0.
  • Reduces Razor errors from 5 to 3 via new support for group names that are invalid JS identifiers but valid in Oniguruma.
• Applies new option rules.singleline (Oniguruma option ONIG_OPTION_SINGLELINE).
  • Changes transpiled output for ^ and $.
  • Improves performance of some grammars without any change in meaning since TM grammars are applied line by line.
• Tweaks new perf-related documentation.

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