refactor: Add `AlignedBytes` types

[coastalwhite]

This adds types that arrow NativeTypes can cast to which can help to reduce monomorphizations. This also adds the support to SharedStorage to keep use a type with a stricter size and alignment constraint as BackingStore without memcopying.

fyi @orlp

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 22.22222% with 105 lines in your changes missing coverage. Please review.

Project coverage is 80.01%. Comparing base (01a4e06) to head (e387dec). Report is 12 commits behind head on main.

Files with missing lines	Patch %	Lines
crates/polars-arrow/src/types/aligned_bytes.rs	0.00%	57 Missing :warning:
crates/polars-arrow/src/storage.rs	37.66%	48 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #19308      +/-   ##
==========================================
- Coverage   80.03%   80.01%   -0.03%     
==========================================
  Files        1528     1532       +4     
  Lines      209819   210162     +343     
  Branches     2419     2434      +15     
==========================================
+ Hits       167932   168159     +227     
- Misses      41336    41448     +112     
- Partials      551      555       +4     

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[coastalwhite]

@orlp are there still objections to this getting merged?

[orlp]

@coastalwhite Nope, I pushed my changes and separated the stuff I wanted to separate into a different PR.