* Add make_fn macro in builtins module

* Replace all array methods with the make_fn macro

* Set builtins method with make_fn for bool, console, error, json, math, number, object, regexp and string

* Rename make_fn macro to make_builtin_fn

* Rename the actual macro rule to make_builtin_fn

* make_builtin_fn macro without length will result to length 0

* Add length property for every builtin method

* Remove duplicate definition of toString method in regexp

* Add missing length attributes to builtins methods

* Added the initial re-implementation of Display for Objects

* Added internal object slots printing

* Used INSTANCE_PROTOTYPE instead of "__proto__"

* Updated TODO comment

* rustfmt

* Fixed clippy and unit tests

* WIP: Added a working prototype for detecting cycles

* Refactored the object printing logic

* Reverted test.js

* Fixed print identation

* rustfmt

* Added printing for the internal_slots

* Fixed missing comma between internal slots & props when printing

* Clippy

* Implemented a macro for printing objects & refactored

* Used display_obj in console.log

* rustfmt

* Fixed String & Array prototypes length not being set

* Extracted common logic in a function

* Commented out problematic lines in `concat`

* rustfmt

* Refactored console.rs & value.rs

* Fixed log_string_from looking for wrong string slot

* Reverted commented test

* Removed Array & String prototype lengths' getters

* Removed unused functions

* rustfmt

* Adding support for rest/spread