DSEGOG-553 configurable default channels

[louise-davies]

Description

Add initialChannels config to settings, and this controls:

• which channels are loaded in the table by default
• if a default channel is removable
• if a default channel is sticky

These three functionalities cover both the requested EPAC behaviour (sticky, non-removable time channel which is still the default), and means that if we want we can replicate eCAT (time and shotnum as initial channels, both removable and non-sticky)

Testing instructions

Add a set up instructions describing how the reviewer should test the code

• Review code
• Check Actions build
• Review changes to test coverage
• Try some different initial channels config, test that the removable & sticky behaviour work correctly

Agile board tracking

Closes DSEGOG-553

[codecov]

Codecov Report

❌ Patch coverage is 96.29630% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 96.67%. Comparing base (49da776) to head (dc39b67).
⚠️ Report is 29 commits behind head on develop.

Files with missing lines	Patch %	Lines
src/state/slices/configSlice.tsx	90.47%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #907      +/-   ##
===========================================
+ Coverage    96.42%   96.67%   +0.25%     
===========================================
  Files          107      108       +1     
  Lines         5396     5506     +110     
  Branches      1568     1611      +43     
===========================================
+ Hits          5203     5323     +120     
+ Misses         186      174      -12     
- Partials         7        9       +2     

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[joshdimanteto]

Works well, tested the sticky and removable functionality. One thing i noticed was that if we have old sessions, it is not going to have the new order.

[louise-davies]

@joshdimanteto for EPAC we won't be changing the config, and for Gemini it's not really being used yet I don't think, plus I think they want them to be deletable anyway so them having sessions without it is fine

[joshdimanteto]

LGTM