Specification compliant ToBigInt (to_bigint)

[HalidOdat]

It changes the following:

• Moved ValueDatas to_bigint => Interpreters to_bigint
• Merged Ast BigInt to Builtin BigInt.
• Split BigInt logic to separate files:
  • builtins/bigint/operations.rs for BigInt operations.
  • builtins/bigint/conversions.rs for BigInt conversions.
  • builtins/bigint/equality.rs for BigInt equality checking.

[codecov]

Codecov Report

Merging #450 into master will increase coverage by 0.15%.
The diff coverage is 69.42%.

@@            Coverage Diff             @@
##           master     #450      +/-   ##
==========================================
+ Coverage   66.09%   66.24%   +0.15%     
==========================================
  Files         128      131       +3     
  Lines        8992     9039      +47     
==========================================
+ Hits         5943     5988      +45     
- Misses       3049     3051       +2     

Impacted Files	Coverage Δ
boa/src/builtins/mod.rs	100.00% <ø> (ø)
boa/src/builtins/value/conversions.rs	42.85% <ø> (-0.57%)	⬇️
boa/src/builtins/value/mod.rs	55.84% <0.00%> (-1.26%)	⬇️
boa/src/builtins/value/operations.rs	58.46% <ø> (-5.57%)	⬇️
boa/src/syntax/ast/constant.rs	48.00% <ø> (ø)
boa/src/syntax/ast/token.rs	44.32% <ø> (ø)
boa/src/exec/mod.rs	53.98% <36.36%> (-0.53%)	⬇️
boa/src/builtins/bigint/operations.rs	44.82% <44.82%> (ø)
boa/src/builtins/value/equality.rs	63.95% <63.95%> (ø)
boa/src/builtins/bigint/equality.rs	66.66% <66.66%> (ø)
... and 12 more

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[github-actions]

Benchmark for 2be3d4d

Click to view benchmark

Test	PR Benchmark	Master Benchmark	%
Create Realm	450.2±18.63µs	457.7±17.92µs	98%
Expression (Lexer)	2.2±0.08µs	2.2±0.07µs	99%
Expression (Parser)	5.0±0.29µs	5.0±0.21µs	101%
Fibonacci (Execution)	2.9±0.33ms	2.9±0.10ms	101%
For loop (Execution)	482.3±28.01µs	467.8±18.82µs	103%
For loop (Lexer)	5.6±0.27µs	5.4±0.20µs	102%
For loop (Parser)	14.5±0.65µs	14.7±0.92µs	98%
Hello World (Lexer)	1085.3±59.65ns	1024.2±48.52ns	106%
Hello World (Parser)	2.4±0.12µs	2.3±0.09µs	104%
Symbols (Execution)	502.1±22.05µs	504.1±24.42µs	100%
	undefined	undefined	100%

[github-actions]

Benchmark for 35b878a

Click to view benchmark

Test	PR Benchmark	Master Benchmark	%
Create Realm	472.0±49.56µs	465.9±20.01µs	101%
Expression (Lexer)	2.2±0.09µs	2.3±0.28µs	98%
Expression (Parser)	5.3±0.22µs	5.4±0.22µs	99%
Fibonacci (Execution)	2.9±0.16ms	2.8±0.13ms	102%
For loop (Execution)	508.9±42.31µs	484.6±37.12µs	105%
For loop (Lexer)	6.0±0.45µs	5.9±0.31µs	102%
For loop (Parser)	14.8±0.85µs	14.5±0.53µs	102%
Hello World (Lexer)	1070.3±45.04ns	1057.1±41.58ns	101%
Hello World (Parser)	2.5±0.12µs	2.4±0.06µs	105%
Symbols (Execution)	509.9±28.66µs	503.1±18.69µs	101%
	undefined	undefined	100%

[HalidOdat]

I think this is ready for review :)

[github-actions]

Benchmark for 3956d50

Click to view benchmark

Test	PR Benchmark	Master Benchmark	%
Create Realm	469.0±25.22µs	466.4±14.33µs	101%
Expression (Lexer)	2.1±0.13µs	2.2±0.09µs	97%
Expression (Parser)	5.2±0.18µs	5.2±0.20µs	98%
Fibonacci (Execution)	2.7±0.06ms	2.7±0.06ms	100%
For loop (Execution)	486.6±24.11µs	479.7±11.60µs	101%
For loop (Lexer)	5.4±0.19µs	5.6±0.51µs	95%
For loop (Parser)	13.9±0.85µs	14.1±2.12µs	99%
Hello World (Lexer)	991.7±44.73ns	977.0±40.18ns	102%
Hello World (Parser)	2.3±0.09µs	2.3±0.07µs	99%
Symbols (Execution)	489.0±10.37µs	497.6±17.01µs	98%
	undefined	undefined	100%