Adding TryFromJs implementations for BTreeMap and HashMap

[hansl]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 69.23077% with 8 lines in your changes are missing coverage. Please review.

Project coverage is 50.78%. Comparing base (6ddc2b4) to head (ff790f6).
Report is 173 commits behind head on main.

Files	Patch %	Lines
...e/src/value/conversions/try_from_js/collections.rs	69.23%	8 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3844      +/-   ##
==========================================
+ Coverage   47.24%   50.78%   +3.54%     
==========================================
  Files         476      468       -8     
  Lines       46892    45296    -1596     
==========================================
+ Hits        22154    23004     +850     
+ Misses      24738    22292    -2446     

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[jedel1043]

Thanks!