Rename "Boa" to boa_engine, moved GC and profiler to their crates

[Razican]

This PR closes #230.

It changes the following:

• Changes the main crate name from "Boa" to "boa_engine"
• Creates the "boa_gc" crate which for now just exports the "gc" crate, but will contain a custom garbage collector in the future. Unfortunately, due to how the "gc_derive" crate is implemented, we still need to import the "gc" crate in "boa_engine"
• Creates the "boa_profiler" crate with the boa profiler.
• Improves some imports, cleans some stuff up (for example, we were re-exporting the Position in multiple places, or we were importing the TryInto trait, which is now in the prelude)
• Ordered workspace member crates alphabetically
• Added more exclusions to package creations
• Improved categories, keywords and ordered Cargo.toml fields
• Added new folders to dependabot (and boa_unicode, which was missing)
• Fixed some caching inconsistencies
• Removed top-level re-exports for external crates. Let me know if you want me to add this back :)

I didn't move the Boa console to its own crate, since this requires further work in the engine, since it is currently part of the Context. Ideally, I would like this to be a separate crate and for "boa_engine" to not have it as a dependency ("boa_cli" would depend on it, of course, maybe "boa_wasm" too).

[github-actions]

Test262 conformance changes

VM implementation

Test result	main count	PR count	difference
Total	87,912	87,912	0
Passed	41,354	41,354	0
Ignored	21,153	21,153	0
Failed	25,405	25,405	0
Panics	12	12	0
Conformance	47.04%	47.04%	0.00%

[codecov]

Codecov Report

Merging #1844 (07adca6) into main (517c672) will increase coverage by 0.81%.
The diff coverage is 95.93%.

@@            Coverage Diff             @@
##             main    #1844      +/-   ##
==========================================
+ Coverage   55.27%   56.09%   +0.81%     
==========================================
  Files         200      200              
  Lines       17860    17901      +41     
==========================================
+ Hits         9873    10042     +169     
+ Misses       7987     7859     -128     

Impacted Files	Coverage Δ
boa_cli/src/main.rs	5.26% <ø> (ø)
boa_engine/src/bigint.rs	61.83% <ø> (ø)
boa_engine/src/builtins/dataview/mod.rs	6.81% <ø> (ø)
boa_engine/src/builtins/function/arguments.rs	88.67% <ø> (ø)
boa_engine/src/builtins/intrinsics.rs	83.33% <ø> (ø)
boa_engine/src/builtins/map/ordered_map.rs	72.05% <ø> (ø)
boa_engine/src/builtins/mod.rs	23.72% <ø> (ø)
boa_engine/src/builtins/number/conversions.rs	68.42% <ø> (ø)
boa_engine/src/builtins/set/ordered_set.rs	64.28% <ø> (ø)
...src/builtins/typed_array/integer_indexed_object.rs	0.00% <ø> (ø)
... and 196 more

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[Razican]

Unfortunately, the benchmarking error won't go away, since the path for the main crate is different in the PR and in the "main" branch.

[jedel1043]

No comments from my side :)

[raskad]

Looks good to me.
Just the fixes for boa_profiler.

[raskad]

Suggested change

	measureme = { version = "10.0.0", optional = true }
	measureme = { version = "10.0.0", optional = true }
	once_cell = "1.9.0"

[Razican]

I decided to add a feature, in order to not have an unused dependency when the measure feature was not selected.

[HalidOdat]

Besides the things pointed out by @raskad. Everything looks good from my side :)

[jasonwilliams]

I had a query around the use of “engine”. I think this was already discussed so sorry for bringing it back up. But why did we go with engine over core? I’d assume the fact it’s a js engine is implied, and core would be more consistent with both ChakraCore and JavascriptCore the Microsoft and WebKit engines respectively.

For me engine is a bit like having “interpreter” in the name.

[RageKnify]

@jasonwilliams my argument was that it seems weird for core to depend on other crates. I don't view it as a core of the whole.