feat(app): show spinner while robot logs are downloading

[mcous]

overview

This PR adds a spinner to the download robot logs button while logs are downloading

Known limitation: UI will only allow you to be downloading logs from one robot at a time. This is to make the implementation faster. We can revisit this from 3.13.1 or 3.14

changelog

• feat(app): show spinner while robot logs are downloading

review requests

• Spinner shows while logs are downloading
• Spinner goes away when logs finish downloading
• Spinner goes away if logs fail to download

[codecov]

Codecov Report

Merging #4158 into release_3.13.0 will decrease coverage by 0.01%.
The diff coverage is 15.78%.

@@                Coverage Diff                 @@
##           release_3.13.0    #4158      +/-   ##
==================================================
- Coverage           57.87%   57.85%   -0.02%     
==================================================
  Files                 854      857       +3     
  Lines               24207    24219      +12     
==================================================
+ Hits                14010    14013       +3     
- Misses              10197    10206       +9

Impacted Files	Coverage Δ
app/src/shell/index.js	100% <ø> (+29.41%)	⬆️
...c/components/RobotSettings/AdvancedSettingsCard.js	0% <0%> (ø)	⬆️
app/src/shell/robot-logs/actions.js	0% <0%> (ø)
app/src/shell/robot-logs/selectors.js	0% <0%> (ø)
app-shell/src/robot-logs.js	0% <0%> (ø)	⬆️
app/src/shell/robot-logs/reducer.js	60% <60%> (ø)

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[sfoster1]

This definitely works!