utilize slots attributes to speedup core performance

[Vizonex]

What do these changes do?

These changes do nothing special it's just adding __slots__ under the assumption that performance can be increased. I do not have the sole ability however to use memcached on a Windows Operating System due to how Redis and Memcache use sockets to handle database operations so you'll have to take my word for it. I did however have some reformatting done with ruff on the files I have changed but if this is not what you want feel free to tell me.

Are there changes in behavior for the user?

Related issue number

Checklist

• I think the code is well written
• Unit tests for the changes exist
• Documentation reflects the changes

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.80%. Comparing base (b5543d0) to head (f1c0fdc).
⚠️ Report is 39 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #501      +/-   ##
==========================================
+ Coverage   92.32%   92.80%   +0.47%     
==========================================
  Files           9        9              
  Lines         769      764       -5     
  Branches       42       42              
==========================================
- Hits          710      709       -1     
+ Misses         48       44       -4     
  Partials       11       11              

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