Add overloads for dumps and write for BC (v4)

[Schamper]

This adds overloads for the .dumps() and .write() methods on types for backwards compatibility with the old API.

For example, this enables the following syntax:

cs.uint32(2).dumps() == b"\x02\x00\x00\x00"
cs.uint32.dumps(2) == b"\x02\x00\x00\x00"

Similarly with the .write() function.

It's open for discussion whether we should merge this in, or just face the changed API. I was mostly curious if it was possible at all.

[codecov]

Codecov Report

Attention: 61 lines in your changes are missing coverage. Please review.

Comparison is base (6ac2073) 90.49% compared to head (c9b1dae) 90.97%.
Report is 40 commits behind head on refactor-v4.

❗ Current head c9b1dae differs from pull request most recent head d81e686. Consider uploading reports for the commit d81e686 to get more accurate results

Files	Patch %	Lines
dissect/cstruct/types/enum.py	87.25%	13 Missing ⚠️
dissect/cstruct/parser.py	84.50%	11 Missing ⚠️
dissect/cstruct/types/structure.py	96.82%	10 Missing ⚠️
dissect/cstruct/cstruct.py	90.32%	6 Missing ⚠️
dissect/cstruct/compiler.py	97.89%	5 Missing ⚠️
dissect/cstruct/types/flag.py	79.16%	5 Missing ⚠️
dissect/cstruct/types/base.py	95.78%	4 Missing ⚠️
dissect/cstruct/expression.py	98.27%	3 Missing ⚠️
dissect/cstruct/types/char.py	95.65%	2 Missing ⚠️
dissect/cstruct/bitbuffer.py	75.00%	1 Missing ⚠️
... and 1 more

Additional details and impacted files

@@               Coverage Diff               @@
##           refactor-v4      #54      +/-   ##
===============================================
+ Coverage        90.49%   90.97%   +0.47%     
===============================================
  Files               19       19              
  Lines             1694     2050     +356     
===============================================
+ Hits              1533     1865     +332     
- Misses             161      185      +24     

Flag	Coverage Δ
unittests	90.97% <95.41%> (+0.47%)	⬆️

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