[Merged by Bors] - Improve identifier parsing

[jedel1043]

Another change extracted from #2411.

This PR changes the following:

• Improves our identifier parsing with a new Identifier parser that unifies parsing for IdentifierReference, BindingIdentifier and LabelIdentifier.
• Slightly improves some error messages.
• Extracts our manual initialization of static Syms with a new static_syms proc macro.
• Adds set_module_mode and module_mode to the cursor to prepare for modules.

[github-actions]

Test262 conformance changes

Test result	main count	PR count	difference
Total	94,205	94,205	0
Passed	70,722	70,722	0
Ignored	18,622	18,622	0
Failed	4,861	4,861	0
Panics	0	0	0
Conformance	75.07%	75.07%	0.00%

[codecov]

Codecov Report

Merging #2581 (dd1e80e) into main (99eba55) will decrease coverage by 0.10%.
The diff coverage is 34.70%.

@@            Coverage Diff             @@
##             main    #2581      +/-   ##
==========================================
- Coverage   49.93%   49.84%   -0.10%     
==========================================
  Files         381      381              
  Lines       37899    37974      +75     
==========================================
+ Hits        18925    18927       +2     
- Misses      18974    19047      +73     

Impacted Files	Coverage Δ
boa_interner/src/lib.rs	84.03% <ø> (ø)
boa_macros/src/lib.rs	0.00% <0.00%> (ø)
boa_parser/src/error.rs	53.96% <ø> (-6.97%)	⬇️
.../src/parser/expression/left_hand_side/arguments.rs	59.52% <0.00%> (-1.46%)	⬇️
boa_ast/src/keyword.rs	45.13% <18.60%> (-14.48%)	⬇️
boa_parser/src/parser/cursor/mod.rs	87.50% <50.00%> (-1.79%)	⬇️
...ser/src/parser/expression/left_hand_side/member.rs	48.36% <50.00%> (ø)
boa_parser/src/parser/expression/identifiers.rs	62.66% <56.92%> (+7.72%)	⬆️
boa_interner/src/sym.rs	100.00% <100.00%> (ø)
...arser/src/parser/expression/left_hand_side/call.rs	52.30% <100.00%> (ø)
... and 7 more

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[jedel1043]

bors r+

[bors]

Build failed:

• Coverage

[jedel1043]

bors retry

[bors]

Pull request successfully merged into main.

Build succeeded:

• Build and Test (macos-latest)
• Build and Test (windows-latest)
• Coverage
• Misc