Adds method and function deduplication to frontend.

[esdrubal]

Description

Adds function cached to query engine, and reuses previously compiled methods and functions.

Closes #5904.

Checklist

• I have linked to any relevant issues.
• I have commented my code, particularly in hard-to-understand areas.
• I have updated the documentation where relevant (API docs, the reference, and the Sway book).
  • If my change requires substantial documentation changes, I have requested support from the DevRel team
• I have added tests that prove my fix is effective or that my feature works.
• I have added (or requested a maintainer to add) the necessary Breaking* or New Feature labels where relevant.
• I have done my best to ensure that my PR adheres to the Fuel Labs Code Review Standards.
• I have requested a review from the relevant team or maintainers.

[github-actions]

Benchmark for 137c576

Click to view benchmark

Test	Base	PR	%
code_action	5.6±0.26ms	5.8±0.39ms	+3.57%
code_lens	286.8±6.18ns	289.8±11.87ns	+1.05%
compile	7.0±0.09s	6.9±0.12s	-1.43%
completion	5.1±0.37ms	5.2±0.24ms	+1.96%
did_change_with_caching	6.4±0.09s	6.4±0.10s	0.00%
document_symbol	1023.2±70.27µs	945.8±18.82µs	-7.56%
format	90.3±1.29ms	87.9±1.34ms	-2.66%
goto_definition	355.3±5.32µs	351.6±7.67µs	-1.04%
highlight	8.8±0.57ms	9.2±0.27ms	+4.55%
hover	583.0±12.41µs	589.1±9.90µs	+1.05%
idents_at_position	120.4±0.95µs	119.8±0.78µs	-0.50%
inlay_hints	639.0±15.71µs	652.7±26.13µs	+2.14%
on_enter	494.4±68.41ns	491.8±11.83ns	-0.53%
parent_decl_at_position	3.6±0.06ms	3.8±0.05ms	+5.56%
prepare_rename	352.6±5.00µs	348.1±6.14µs	-1.28%
rename	9.4±0.29ms	10.0±0.25ms	+6.38%
semantic_tokens	1068.0±21.11µs	1042.2±19.31µs	-2.42%
token_at_position	344.7±2.19µs	346.0±4.31µs	+0.38%
tokens_at_position	3.6±0.06ms	3.7±0.02ms	+2.78%
tokens_for_file	418.3±4.19µs	406.6±2.81µs	-2.80%
traverse	52.6±1.56ms	51.7±1.73ms	-1.71%

[github-actions]

Benchmark for b7a8502

Click to view benchmark

Test	Base	PR	%
code_action	5.4±0.10ms	5.5±0.08ms	+1.85%
code_lens	281.7±6.90ns	340.0±10.65ns	+20.70%
compile	3.0±0.02s	2.9±0.04s	-3.33%
completion	4.7±0.11ms	4.7±0.03ms	0.00%
did_change_with_caching	2.8±0.03s	2.8±0.07s	0.00%
document_symbol	1083.5±32.37µs	963.9±7.59µs	-11.04%
format	73.6±0.89ms	73.5±0.74ms	-0.14%
goto_definition	365.0±7.72µs	368.5±5.75µs	+0.96%
highlight	9.0±0.03ms	9.1±0.12ms	+1.11%
hover	490.4±5.25µs	490.4±8.58µs	0.00%
idents_at_position	130.7±2.29µs	123.8±1.08µs	-5.28%
inlay_hints	670.2±38.16µs	666.4±12.63µs	-0.57%
on_enter	460.3±12.34ns	452.4±9.98ns	-1.72%
parent_decl_at_position	3.7±0.04ms	3.8±0.03ms	+2.70%
prepare_rename	366.7±10.89µs	367.5±14.04µs	+0.22%
rename	9.6±0.18ms	9.7±0.12ms	+1.04%
semantic_tokens	996.8±24.79µs	991.7±14.39µs	-0.51%
token_at_position	364.8±2.36µs	365.9±3.54µs	+0.30%
tokens_at_position	3.8±0.05ms	3.8±0.15ms	0.00%
tokens_for_file	426.1±1.74µs	421.5±2.22µs	-1.08%
traverse	40.0±1.00ms	41.0±1.36ms	+2.50%

[github-actions]

Benchmark for de6c896

Click to view benchmark

Test	Base	PR	%
code_action	5.4±0.01ms	5.4±0.11ms	0.00%
code_lens	282.2±12.91ns	330.7±12.27ns	+17.19%
compile	2.9±0.03s	2.8±0.03s	-3.45%
completion	4.6±0.07ms	4.7±0.03ms	+2.17%
did_change_with_caching	2.9±0.04s	2.7±0.03s	-6.90%
document_symbol	1035.3±32.45µs	1038.1±48.09µs	+0.27%
format	73.5±0.92ms	73.5±0.80ms	0.00%
goto_definition	367.2±6.85µs	367.0±3.89µs	-0.05%
highlight	9.0±0.08ms	9.0±0.21ms	0.00%
hover	480.6±4.73µs	485.2±6.08µs	+0.96%
idents_at_position	124.1±0.48µs	121.9±0.95µs	-1.77%
inlay_hints	656.2±15.06µs	655.1±23.45µs	-0.17%
on_enter	459.1±8.36ns	452.7±8.69ns	-1.39%
parent_decl_at_position	3.7±0.02ms	3.7±0.03ms	0.00%
prepare_rename	361.1±4.05µs	367.2±9.19µs	+1.69%
rename	9.6±0.11ms	9.6±0.03ms	0.00%
semantic_tokens	961.2±12.75µs	973.1±18.88µs	+1.24%
token_at_position	363.6±3.69µs	360.7±4.33µs	-0.80%
tokens_at_position	3.7±0.04ms	3.7±0.03ms	0.00%
tokens_for_file	418.1±2.54µs	412.8±5.08µs	-1.27%
traverse	41.0±1.11ms	40.7±0.91ms	-0.73%