chore: Remove hatch scripts and replace with built-in hatch utilities

[jason-famedly]

Replace hatch run cov, hatch format and hatch lint with proper hatch fmt and hatch test ... options. Based on work done for the synapse-invite-checker

For the moment, using hatch fmt to run static analysis will run head first into a wall of issues. To run the formatting only, just run hatch fmt -f

🔴 NOTE: One of the consequences of this was changing the coverage data being collected. Previously, this included the testing infrastructure and it's utilities. This has now been removed from the calculation, which was a net-decrease in coverage percent

🔴 NOTE: This pins jwcrypto to <=1.5.6. See below for reasoning

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 73.28%. Comparing base (df35f8c) to head (5ef8087).

❗ There is a different number of reports uploaded between BASE (df35f8c) and HEAD (5ef8087). Click for more details.

HEAD has 3 uploads less than BASE

Flag	BASE (df35f8c)	HEAD (5ef8087)
	6	3

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #84      +/-   ##
==========================================
- Coverage   83.08%   73.28%   -9.81%     
==========================================
  Files          18        5      -13     
  Lines        1874      756    -1118     
  Branches      193      145      -48     
==========================================
- Hits         1557      554    -1003     
+ Misses        234      143      -91     
+ Partials       83       59      -24     

Files with missing lines	Coverage Δ
synapse_token_authenticator/__init__.py	100.00% <100.00%> (ø)
synapse_token_authenticator/claims_validator.py	77.60% <100.00%> (ø)
synapse_token_authenticator/config.py	68.81% <100.00%> (ø)
synapse_token_authenticator/utils.py	90.90% <100.00%> (ø)

... and 13 files with indirect coverage changes

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[jason-famedly]

This is an unexpected drive-by fix. The release of v1.5.7 introduces a hardening change to the length of HMAC tokens that affects testing. It is unknown if it affects production as well(I suspect not). Until that is resolved, let's keep this pinned