Deregister any entities when a skill is detached. Fixes #394

[lbt]

No description provided.

[codecov]

Codecov Report

Attention: 10 lines in your changes are missing coverage. Please review.

Comparison is base (835ac34) 60.90% compared to head (a96013a) 60.83%.
Report is 9 commits behind head on dev.

❗ Current head a96013a differs from pull request most recent head 0154c34. Consider uploading reports for the commit 0154c34 to get more accurate results

Files	Patch %	Lines
ovos_core/intent_services/padacioso_service.py	50.00%	6 Missing ⚠️
ovos_core/intent_services/adapt_service.py	60.00%	2 Missing ⚠️
ovos_core/intent_services/padatious_service.py	60.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #395      +/-   ##
==========================================
- Coverage   60.90%   60.83%   -0.08%     
==========================================
  Files          13       13              
  Lines        1857     1879      +22     
==========================================
+ Hits         1131     1143      +12     
- Misses        726      736      +10     

Flag	Coverage Δ
unittests	60.83% <58.33%> (-0.08%)	⬇️

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[lbt]

Depends on OpenVoiceOS/OVOS-workshop#171