Copy ABOUT.md file to all published crates

[jedel1043]

Unfortunately, cargo publish cannot handle having relative paths to files outside of the published crate, which is why we need to undo the change. Left the individual files though, since it makes it easier to check for diffs at least.

Thought about using symlinks instead, but it seems that support for symlinks in git on windows is still suboptimal.

[github-actions]

Test262 conformance changes

Test result	main count	PR count	difference
Total	94,842	94,842	0
Passed	74,691	74,691	0
Ignored	18,812	18,812	0
Failed	1,339	1,339	0
Panics	0	0	0
Conformance	78.75%	78.75%	0.00%

[codecov]

Codecov Report

Merging #3074 (b383964) into main (e96c838) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #3074   +/-   ##
=======================================
  Coverage   50.43%   50.43%           
=======================================
  Files         445      445           
  Lines       45910    45910           
=======================================
  Hits        23154    23154           
  Misses      22756    22756           

Impacted Files	Coverage Δ
boa_ast/src/lib.rs	75.00% <ø> (ø)
boa_cli/src/main.rs	0.60% <ø> (ø)
boa_engine/src/lib.rs	78.20% <ø> (ø)
boa_gc/src/lib.rs	99.51% <ø> (ø)
boa_icu_provider/src/lib.rs	100.00% <ø> (ø)
boa_interner/src/lib.rs	84.03% <ø> (ø)
boa_macros/src/lib.rs	0.00% <ø> (ø)
boa_profiler/src/lib.rs	66.66% <ø> (ø)
boa_tester/src/main.rs	0.00% <ø> (ø)
boa_unicode/src/lib.rs	66.66% <ø> (ø)
... and 1 more