Added extend/extend_unchecked for MutableBinaryArray

[VasanthakumarV]

This PR adds TrustedLen-based extend and extend_unchecked methods for MutableBinaryArray.

[codecov]

Codecov Report

Merging #486 (5fcd673) into main (a15044a) will decrease coverage by 0.35%.
The diff coverage is 94.93%.

@@            Coverage Diff             @@
##             main     #486      +/-   ##
==========================================
- Coverage   80.33%   79.98%   -0.36%     
==========================================
  Files         374      379       +5     
  Lines       22919    23270     +351     
==========================================
+ Hits        18413    18612     +199     
- Misses       4506     4658     +152     

Impacted Files	Coverage Δ
src/array/binary/mutable.rs	65.08% <93.10%> (+1.73%)	⬆️
tests/it/array/binary/mutable.rs	100.00% <100.00%> (ø)
src/io/csv/read/reader.rs	47.36% <0.00%> (-15.79%)	⬇️
src/array/dictionary/mutable.rs	70.76% <0.00%> (-5.90%)	⬇️
src/array/list/mutable.rs	66.33% <0.00%> (-4.94%)	⬇️
src/array/fixed_size_binary/mutable.rs	67.03% <0.00%> (-4.74%)	⬇️
src/array/fixed_size_list/mutable.rs	48.52% <0.00%> (-4.70%)	⬇️
src/ffi/array.rs	64.70% <0.00%> (-4.05%)	⬇️
src/bitmap/bitmap_ops.rs	93.81% <0.00%> (-4.04%)	⬇️
src/array/ffi.rs	65.00% <0.00%> (-3.43%)	⬇️
... and 33 more

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[jorgecarleitao]

Looks amazing, as usual. Two minor nits, good to go!