fix/legacy_play

[JarbasAl]

handle Playlist objects

use helper methods to parse the ocp stream from PluginStream objects

needs OpenVoiceOS/ovos-utils#257

[codecov]

Codecov Report

Attention: Patch coverage is 61.53846% with 5 lines in your changes missing coverage. Please review.

Project coverage is 75.88%. Comparing base (a3aa6f1) to head (e789218).
Report is 1 commits behind head on dev.

Files	Patch %	Lines
ovos_core/intent_services/ocp_service.py	61.53%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #514      +/-   ##
==========================================
- Coverage   75.97%   75.88%   -0.10%     
==========================================
  Files          15       15              
  Lines        3018     3027       +9     
==========================================
+ Hits         2293     2297       +4     
- Misses        725      730       +5     

Flag	Coverage Δ
unittests	75.88% <61.53%> (-0.10%)	⬇️

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