Add support for X8 Pro AI Plus (eom321)

[rqi14]

Fix #804

Tested with ECOVAS integration in Home Assistant OS that uses this repository to talk to the robot.

What I did was simply create a file for eom321 with its content being identical to n0vyif.py merged in #1167

It seems X8 Pro AI Plus and X8 Pro Omni use the same protocol despite different class names.

[edenhaus]

Thanks @rqi14 👍

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.80%. Comparing base (c865b21) to head (51cdc9c).
⚠️ Report is 6 commits behind head on dev.

Additional details and impacted files

@@           Coverage Diff           @@
##              dev    #1432   +/-   ##
=======================================
  Coverage   94.80%   94.80%           
=======================================
  Files         152      152           
  Lines        5969     5969           
  Branches      350      350           
=======================================
  Hits         5659     5659           
  Misses        249      249           
  Partials       61       61           

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[codspeed-hq]

Merging this PR will not alter performance

✅ 113 untouched benchmarks

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_{Comparing rqi14:dev (51cdc9c) with dev (c865b21)}