Use ParamSpec for LRU Cache Typing (#2629)

[q404365631]

New module with PEP-612 ParamSpec typing for lru_cache and ttl_cache decorators preserving function signatures. Closes #2629

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (003e175) to head (93d9984).

Additional details and impacted files

@@            Coverage Diff            @@
##            master     #2634   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           64        64           
  Lines         7976      7976           
  Branches      1102      1102           
=========================================
  Hits          7976      7976           

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[vytas7]

Hi, and thanks for this contribution.

Unfortunately, this does not align with the structure and quality requirements of this project; I suggest we restart this from scratch:

• Don't remove the PR template.
• We don't want a new file for these functions, they already exist.
• Files must end with an LF (\n).