feat(jsruntime): closures

[masnagam]

on my PC:

• about 3% faster in fib8.js than before
• about 3% slower in fib32.js than before

Closes: #195

[masnagam]

installing llvm failed due to llvm/llvm-project#99502

[github-actions]

Bencher

Report	Sat, July 20, 2024 at 02:17:25 UTC
Project	bee-browser
Branch	236/merge
Testbed	ubuntu-latest

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Benchmark	Latency	Latency Results nanoseconds (ns)
htmlparser/parse/lipsum.html	➖ (view plot)	289,330.00
htmlparser/parse/medium-fragment.html	➖ (view plot)	98,588.00
htmlparser/parse/wikipedia.html	➖ (view plot)	5,890,500.00
jsruntime/fib/16	➖ (view plot)	6,165,400.00
jsruntime/fib/24	➖ (view plot)	7,891,400.00
jsruntime/fib/32	➖ (view plot)	106,540,000.00

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[codecov]

Codecov Report

Attention: Patch coverage is 85.65517% with 104 lines in your changes missing coverage. Please review.

Project coverage is 78.30%. Comparing base (e635836) to head (6e3b7ea).

Files	Patch %	Lines
libs/jsruntime/src/semantics/scope.rs	82.48%	30 Missing and 1 partial ⚠️
libs/jsruntime/src/bridge/mod.rs	71.27%	27 Missing ⚠️
libs/jsruntime/src/semantics/mod.rs	92.85%	23 Missing ⚠️
bins/jstb/src/main.rs	0.00%	20 Missing ⚠️
libs/jsruntime/src/function.rs	91.42%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #236      +/-   ##
==========================================
+ Coverage   78.20%   78.30%   +0.10%     
==========================================
  Files          65       65              
  Lines       20244    20640     +396     
  Branches    20244    20640     +396     
==========================================
+ Hits        15831    16163     +332     
- Misses       4181     4246      +65     
+ Partials      232      231       -1     

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