feat: add typed extensible data for bots/conns

[linuxdaemon]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 89.30233% with 23 lines in your changes missing coverage. Please review.
✅ Project coverage is 86.99%. Comparing base (840b40c) to head (59de260).
⚠️ Report is 10 commits behind head on main.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
cloudbot/util/extensible_data.py	75.00%	7 Missing and 2 partials ⚠️
plugins/core/cap.py	85.71%	4 Missing and 2 partials ⚠️
plugins/core/server_info.py	86.66%	3 Missing and 3 partials ⚠️
plugins/admin_channel.py	85.71%	0 Missing and 1 partial ⚠️
plugins/core/core_connect.py	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #879      +/-   ##
==========================================
- Coverage   87.01%   86.99%   -0.03%     
==========================================
  Files         280      281       +1     
  Lines       20838    20932      +94     
  Branches     1780     1789       +9     
==========================================
+ Hits        18133    18210      +77     
- Misses       2348     2360      +12     
- Partials      357      362       +5     

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