Fix function object constructable/callable

[HalidOdat]

It changes the following:

• Removed unnesecary FunctionKind and cleanup
• Added name property to global objects. example: BigInt.name === "BigInt"
• Added length property to global objects. example: Boolean.length === 1
• Made arrow functions only callable.
• Fixes function objects constructability and callability.

Not all function objects are constructable or callable for example:

Type	constructable	callable
Arrow Functions	false	true
Function Decl/Expr	true	true
Classes	true	false
Builtins	false (unless explicit true)	true

More informations see: https://stackoverflow.com/a/40922715

[github-actions]

Benchmark for a0da1a2

Click to view benchmark

Test	PR Benchmark	Master Benchmark	%
Create Realm	394.5±6.14µs	396.5±11.51µs	100%
Expression (Lexer)	1957.1±32.12ns	1966.2±37.16ns	100%
Expression (Parser)	4.9±0.16µs	5.2±0.25µs	95%
Fibonacci (Execution)	2.6±0.03ms	2.6±0.07ms	100%
For loop (Execution)	420.9±6.72µs	413.5±6.22µs	102%
For loop (Lexer)	5.1±0.09µs	5.3±0.40µs	96%
For loop (Parser)	14.2±0.47µs	14.4±0.37µs	98%
Hello World (Lexer)	949.2±20.50ns	921.2±26.49ns	103%
Hello World (Parser)	2.4±0.09µs	2.4±0.08µs	98%
Symbols (Execution)	423.4±5.30µs	432.0±23.36µs	98%
	undefined	undefined	100%

[github-actions]

Benchmark for 34a4151

Click to view benchmark

Test	PR Benchmark	Master Benchmark	%
Create Realm	406.4±18.58µs	402.8±14.87µs	101%
Expression (Lexer)	1923.7±87.99ns	1993.8±103.14ns	96%
Expression (Parser)	5.1±0.18µs	5.2±0.28µs	98%
Fibonacci (Execution)	2.8±0.15ms	2.7±0.11ms	105%
For loop (Execution)	432.3±37.47µs	440.4±20.19µs	98%
For loop (Lexer)	5.2±0.22µs	5.1±0.13µs	101%
For loop (Parser)	15.0±0.84µs	14.5±0.68µs	103%
Hello World (Lexer)	973.4±49.54ns	965.9±57.57ns	101%
Hello World (Parser)	2.4±0.15µs	2.4±0.08µs	98%
Symbols (Execution)	433.1±19.05µs	421.5±20.40µs	103%
	undefined	undefined	100%

[github-actions]

Benchmark for 5c092ba

Click to view benchmark

Test	PR Benchmark	Master Benchmark	%
Create Realm	368.3±17.55µs	340.3±26.17µs	108%
Expression (Lexer)	1675.2±78.08ns	1742.6±97.11ns	96%
Expression (Parser)	4.7±0.35µs	4.2±0.22µs	111.00000000000001%
Fibonacci (Execution)	2.3±0.10ms	2.4±0.13ms	98%
For loop (Execution)	377.8±23.02µs	408.0±22.87µs	92%
For loop (Lexer)	4.5±0.26µs	4.6±0.26µs	99%
For loop (Parser)	13.0±0.98µs	12.5±1.04µs	104%
Hello World (Lexer)	828.4±40.88ns	840.4±42.82ns	99%
Hello World (Parser)	2.2±0.18µs	2.1±0.15µs	103%
Symbols (Execution)	387.3±17.77µs	401.5±22.22µs	96%
	undefined	undefined	100%

[HalidOdat]

If everything is good with this PR, could we merge it. It has some changes that would make it easier to implement #419 .