feat: add button devices with multiple buttons

[Ernst79]

feat: add button devices with multiple buttons

Adding support for the following button devices

• K9B-1BTN (one button)
• K9B-2BTN (two buttons)
• K9B-3BTN (three buttons)
• MS1BB(MI) (one button)
• XMWXKG01YL (two buttons)

[codecov]

Codecov Report

Attention: 35 lines in your changes are missing coverage. Please review.

Comparison is base (2110db9) 55.06% compared to head (625cb67) 55.79%.
Report is 1 commits behind head on main.

Files	Patch %	Lines
src/xiaomi_ble/parser.py	28.57%	35 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #63      +/-   ##
==========================================
+ Coverage   55.06%   55.79%   +0.73%     
==========================================
  Files           5        5              
  Lines         928      923       -5     
  Branches      191      192       +1     
==========================================
+ Hits          511      515       +4     
+ Misses        330      318      -12     
- Partials       87       90       +3     

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