keyv - feat: adding in hooks for clear and disconnect

[jaredwray]

Please check if the PR fulfills these requirements

• Followed the Contributing and Code of Conduct guidelines.
• Tests for the changes have been added (for bug fixes/features) with 100% code coverage.

What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)
keyv - feat: adding in hooks for clear and disconnect

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (fd5d40a) to head (ce44aa0).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main     #1924      +/-   ##
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+ Coverage   99.94%   100.00%   +0.05%     
===========================================
  Files          40        40              
  Lines        3974      3978       +4     
  Branches      641       641              
===========================================
+ Hits         3972      3978       +6     
+ Misses          2         0       -2     

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[gemini-code-assist]

Code Review

This pull request introduces new lifecycle hooks for the clear and disconnect methods in the Keyv class, specifically BEFORE_CLEAR, AFTER_CLEAR, BEFORE_DISCONNECT, and AFTER_DISCONNECT. It also updates the KeyvHooks enum and adds unit tests to verify the execution of these hooks. The review feedback suggests passing a context object (e.g., containing the namespace) to these hooks to ensure consistency with existing hook implementations and to facilitate future metadata additions without breaking the API.