ENH: Filter Options

[teddyrendahl]

Description

A bunch of helpful navigation widget options. You can now:

• Force scroll to an arbitrary device
• Force scroll to the most upstream blocking device
• Hide devices that are removed from the beam
• Hide devices based on their class

I also implemented the upstream filter in the more general structure now. This means we only disconnect / reconnect to widgets when we switch beamlines. Avoid loading the entire beampath whenever possible!

Motivation and Context

Closes #73 Closes #67

How Has This Been Tested?

Added tests for all new functions

Screenshots (if appropriate):

[codecov-io]

Codecov Report

Merging #76 into master will increase coverage by 0.95%. The diff coverage is 96.82%.

@@            Coverage Diff             @@
##           master      #76      +/-   ##
==========================================
+ Coverage   87.72%   88.68%   +0.95%     
==========================================
  Files           7        7              
  Lines         391      433      +42     
==========================================
+ Hits          343      384      +41     
- Misses         48       49       +1

Impacted Files	Coverage Δ
lightpath/ui/widgets.py	87.71% <100%> (ø)	:arrow_up:
lightpath/ui/gui.py	95.65% <96.55%> (+0.86%)	:arrow_up:

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[teddyrendahl]

Fixed the imports, added a test. Nothing too controversial. Will merge if no complaints.

[ZLLentz]

:+1: