Transition Intl types to NativeObject API

[jedel1043]

Related to #3487.

This makes our Object implementation a lot simpler (saves us a lot of feature gates), so we should see if we can move other non-perf related objects to this.

[github-actions]

Test262 conformance changes

Test result	main count	PR count	difference
Total	95,609	95,609	0
Passed	76,526	76,526	0
Ignored	18,132	18,132	0
Failed	951	951	0
Panics	0	0	0
Conformance	80.04%	80.04%	0.00%

[codecov]

Codecov Report

Attention: 45 lines in your changes are missing coverage. Please review.

Comparison is base (9f181ef) 44.57% compared to head (860f003) 44.63%.

Files	Patch %	Lines
boa_engine/src/builtins/intl/locale/mod.rs	0.00%	15 Missing ⚠️
boa_engine/src/object/mod.rs	0.00%	5 Missing ⚠️
boa_engine/src/builtins/intl/collator/mod.rs	0.00%	4 Missing ⚠️
boa_engine/src/builtins/intl/list_format/mod.rs	0.00%	4 Missing ⚠️
boa_engine/src/builtins/intl/plural_rules/mod.rs	0.00%	4 Missing ⚠️
boa_engine/src/builtins/intl/segmenter/segments.rs	0.00%	4 Missing ⚠️
boa_engine/src/builtins/intl/segmenter/iterator.rs	0.00%	3 Missing ⚠️
boa_engine/src/builtins/intl/segmenter/mod.rs	0.00%	3 Missing ⚠️
boa_engine/src/builtins/intl/locale/utils.rs	0.00%	2 Missing ⚠️
boa_engine/src/builtins/intl/date_time_format.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3491      +/-   ##
==========================================
+ Coverage   44.57%   44.63%   +0.05%     
==========================================
  Files         487      487              
  Lines       50621    50554      -67     
==========================================
  Hits        22563    22563              
+ Misses      28058    27991      -67     

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[HalidOdat]

Nice refactor!

Always happy to see more deletions than additions :D