feat(fast_parser): enhance identifier handling with Unicode support

[GiveMe-A-Name]

Description:

• Added support for Unicode characters in identifiers, allowing for a broader range of valid identifiers.
• Introduced methods to handle Unicode escape sequences and UTF-8 characters in identifiers.
• Updated the lexer to utilize these new methods, improving the parsing of identifiers that include non-ASCII characters.
• Added tests to verify the correct handling of identifiers with Unicode characters and escape sequences.

BREAKING CHANGE:

Related issue (if exists):

[changeset-bot]

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Latest commit: c346947

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[codspeed-hq]

CodSpeed Performance Report

Merging #10226 will degrade performances by 5.22%

_{Comparing GiveMe-A-Name:feat/parse-identifier-name (c346947) with main (540bdf8)}

Summary

❌ 11 regressions
✅ 141 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
❌	serialization of serde	2.8 µs	2.8 µs	-1.05%
❌	es/fast-lexer/angular	8.8 ms	9.2 ms	-3.61%
❌	es/fast-lexer/backbone	1.1 ms	1.2 ms	-4.96%
❌	es/fast-lexer/jquery	5.8 ms	6.1 ms	-4.77%
❌	es/fast-lexer/jquery mobile	9.6 ms	10 ms	-4.55%
❌	es/fast-lexer/mootools	4.6 ms	4.9 ms	-5.11%
❌	es/fast-lexer/three	28.3 ms	29.8 ms	-5.22%
❌	es/fast-lexer/underscore	905.1 µs	954.8 µs	-5.2%
❌	es/fast-lexer/yui	5.4 ms	5.6 ms	-2.94%
❌	es/lints/libs/d3	28 ms	28.3 ms	-1.21%
❌	es/lints/libs/terser	29.4 ms	29.8 ms	-1.42%