[Merged by Bors] - Document the AST

[jedel1043]

As promised in #2319 (comment). There are still some style inconsistencies (which require a bit more time and effort), but having the whole module documented is a lot better for clarity.

[github-actions]

Test262 conformance changes

Test result	main count	PR count	difference
Total	93,789	93,789	0
Passed	69,150	69,150	0
Ignored	18,352	18,352	0
Failed	6,287	6,287	0
Panics	0	0	0
Conformance	73.73%	73.73%	0.00%

[codecov]

Codecov Report

Merging #2377 (94b13c3) into main (48e6513) will decrease coverage by 0.00%.
The diff coverage is 28.96%.

@@            Coverage Diff             @@
##             main    #2377      +/-   ##
==========================================
- Coverage   39.89%   39.88%   -0.01%     
==========================================
  Files         304      304              
  Lines       23332    23317      -15     
==========================================
- Hits         9308     9300       -8     
+ Misses      14024    14017       -7     

Impacted Files	Coverage Δ
boa_engine/src/lib.rs	82.14% <ø> (ø)
boa_engine/src/syntax/ast/declaration/mod.rs	75.75% <ø> (ø)
boa_engine/src/syntax/ast/declaration/variable.rs	39.34% <ø> (ø)
boa_engine/src/syntax/ast/expression/access.rs	21.31% <ø> (ø)
boa_engine/src/syntax/ast/expression/identifier.rs	15.78% <ø> (ø)
...gine/src/syntax/ast/expression/literal/template.rs	12.00% <ø> (ø)
boa_engine/src/syntax/ast/expression/mod.rs	40.29% <ø> (ø)
boa_engine/src/syntax/ast/expression/new.rs	14.28% <0.00%> (ø)
.../src/syntax/ast/expression/operator/conditional.rs	44.00% <0.00%> (ø)
...ngine/src/syntax/ast/expression/tagged_template.rs	36.00% <ø> (ø)
... and 45 more

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[Razican]

This is very good work!! Thank you so much.

I have added some comments, let me know what you think :)

[HalidOdat]

Looks perfect to me! :)

[Razican]

Bors r+

[bors]

🕐 Waiting for PR status (Github check) to be set, probably by CI. Bors will automatically try to run when all required PR statuses are set.

[jedel1043]

bors r+

[bors]

Pull request successfully merged into main.

Build succeeded:

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