fix: update some types and add symmetry between the sync and async server interceptors

[jeffsawatzky]

This PR is just some minor tweaks.

NoReturn is a clearer return type for functions that are supposed to raise
https://docs.python.org/3/library/typing.html#typing.NoReturn

Added the code change from #43 to the async version as well. The test passes without it so I assume something in the actual gRPC library is making sure that we don't override the original status code, but I figured that we shouldn't call abort a second time anyway just to be safe.

Renamed a request parameter to request_or_iterator to match what it actually is and follow the same naming that is used elsewhere.

[codecov-commenter]

Codecov Report

Merging #45 (c75b4e5) into master (25edf03) will increase coverage by 0.01%.
The diff coverage is 100.00%.

❗ Your organization is not using the GitHub App Integration. As a result you may experience degraded service beginning May 15th. Please install the Github App Integration for your organization. Read more.

@@            Coverage Diff             @@
##           master      #45      +/-   ##
==========================================
+ Coverage   94.66%   94.68%   +0.01%     
==========================================
  Files           7        7              
  Lines         375      376       +1     
  Branches       54       55       +1     
==========================================
+ Hits          355      356       +1     
  Misses         15       15              
  Partials        5        5              

Files Changed	Coverage Δ
src/grpc_interceptor/server.py	95.08% <ø> (ø)
src/grpc_interceptor/exception_to_status.py	96.61% <100.00%> (+0.05%)	⬆️
src/grpc_interceptor/testing/dummy_client.py	89.93% <100.00%> (ø)

[d5h]

Thank you!

[jeffsawatzky]

@d5h can we get a release with these? I would like to extend these classes and use the NoReturn types without mypy errors.