[MRG] Check for encoding mismatch with send_c_store()

[scaramallion]

Reference issue

Check for a mismatch between transfer syntax and dataset encoding and either try to fix it or raise if unable to. Closes #891

Tasks

• Unit tests added that reproduce issue or prove feature is working
• Fix or feature added
• Unit tests passing and coverage at 100% after adding fix/feature
• Type annotations updated and passing with mypy

[codecov]

Codecov Report

Merging #893 (55c3b3f) into main (9dc16ef) will not change coverage.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff            @@
##              main      #893   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           28        28           
  Lines         8690      8703   +13     
=========================================
+ Hits          8690      8703   +13     

Files	Coverage Δ
pynetdicom/ae.py	100.00% <100.00%> (ø)
pynetdicom/association.py	100.00% <100.00%> (ø)