More to into_mut implementations

[ritchie46]

This adds an into_mut for Utf8Array and for BooleanArray.

For ListArray this is not yet possible, we first need an anonymous list builder. I believe we have discussed this earlier but I cannot find the issue.

[codecov]

Codecov Report

Merging #801 (dc008bc) into main (777f375) will decrease coverage by 0.21%.
The diff coverage is 20.00%.

@@            Coverage Diff             @@
##             main     #801      +/-   ##
==========================================
- Coverage   71.50%   71.29%   -0.22%     
==========================================
  Files         321      321              
  Lines       16739    16814      +75     
==========================================
+ Hits        11970    11987      +17     
- Misses       4769     4827      +58     

Impacted Files	Coverage Δ
src/array/boolean/mod.rs	57.53% <0.00%> (-24.82%)	⬇️
src/array/utf8/mod.rs	64.17% <28.30%> (-23.48%)	⬇️
src/array/utf8/mutable.rs	81.06% <0.00%> (+0.59%)	⬆️
src/io/parquet/read/nested_utils.rs	78.43% <0.00%> (+0.98%)	⬆️

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