PyDM Interface Cleanup And Show Example GUI

[slacrherbst]

This PR cleans up the PYDM interface and displays the example .ui GUI which includes demonstrations of Rogue specific pydm widgets when running the following command:

python -m pyrogue.examples --gui

The setup.py file was cleaned up to auto find packages in the tree as well as include the .ui file in the distribution.

The pydm interface now passes a figure object directly instead of pickling it through the interface.

Fixes were made to TimePlot to deal with guiGroups.

The local conda.yml file now limits the pydm version correctly.

This PR also seems to have addresses the memory leak when displaying rogue generated figures in pydm.

[codecov-commenter]

Codecov Report

Merging #948 (42afe87) into pre-release (f8174c3) will increase coverage by 0.38%.
The diff coverage is 0.00%.

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@@               Coverage Diff               @@
##           pre-release     #948      +/-   ##
===============================================
+ Coverage        25.54%   25.93%   +0.38%     
===============================================
  Files               72       72              
  Lines             7849     7859      +10     
  Branches          1173     1175       +2     
===============================================
+ Hits              2005     2038      +33     
+ Misses            5683     5657      -26     
- Partials           161      164       +3     

Impacted Files	Coverage Δ
python/pyrogue/examples/_ExampleRoot.py	0.00% <0.00%> (ø)
python/pyrogue/examples/__main__.py	0.00% <0.00%> (ø)
python/pyrogue/pydm/data_plugins/rogue_plugin.py	0.00% <0.00%> (ø)
python/pyrogue/pydm/widgets/plot.py	0.00% <0.00%> (ø)
python/pyrogue/pydm/widgets/time_plotter.py	0.00% <0.00%> (ø)

... and 2 files with indirect coverage changes