Removed UI notification plugin, moved to UI.

Created by: stefanoborini

Moved the UI notification plugin from the BDSS to the UI. It makes sense that it's there, so that we don't depend on zmq here.

Created by: codecov[bot]

Codecov Report

Merging #84 into master will increase coverage by 0.45%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #84      +/-   ##
==========================================
+ Coverage   96.82%   97.28%   +0.45%     
==========================================
  Files          60       57       -3     
  Lines         976      883      -93     
  Branches       82       67      -15     
==========================================
- Hits          945      859      -86     
+ Misses         23       21       -2     
+ Partials        8        3       -5

Impacted Files	Coverage Δ
force_bdss/core_plugins/dummy/dummy_plugin.py	100% <ø> (ø)

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