Implement Performance.now() and Performance.timeOrigin

[HalidOdat]

Adds implementation of the W3C High Resolution Time API's performance.now() method and performance.timeOrigin getter property.

Some benchmarks use this if available, which hopefully will remove the very big fluctuations in performance measurement.

[github-actions]

Test262 conformance changes

Test result	main count	PR count	difference
Total	50,747	50,747	0
Passed	47,877	47,877	0
Ignored	2,060	2,060	0
Failed	810	810	0
Panics	0	0	0
Conformance	94.34%	94.34%	0.00%

[codecov]

Codecov Report

❌ Patch coverage is 68.42105% with 12 lines in your changes missing coverage. Please review.
✅ Project coverage is 57.10%. Comparing base (6ddc2b4) to head (9da3354).
⚠️ Report is 605 commits behind head on main.

Files with missing lines	Patch %	Lines
core/runtime/src/performance/mod.rs	74.28%	9 Missing ⚠️
core/runtime/src/extensions.rs	0.00%	2 Missing ⚠️
cli/src/main.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4551      +/-   ##
==========================================
+ Coverage   47.24%   57.10%   +9.85%     
==========================================
  Files         476      505      +29     
  Lines       46892    57586   +10694     
==========================================
+ Hits        22154    32882   +10728     
+ Misses      24738    24704      -34     

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