Use non-default browser to launch the app

[Rusteam]

What changes are proposed in this pull request?

Fiftyone works best in Chrome, while users might prefer other browsers for surfing the internet.

Add a --browser <browser_name> parameter to fiftyone app launch to use a non-default browser to open the App.

How is this patch tested? If it is not, please explain why.

Running these commands:

fiftyone app launch -b chrome
fiftyone app launch --browser safari
fiftyone app launch --browser oper  # fails (no browser registered with this name)
 fiftyone app launch --browser opera  # fails (non-executable found)

Release Notes

Is this a user-facing change that should be mentioned in the release notes?

• No. You can skip the rest of this section.
• Yes. Give a description of this change to be included in the release
  notes for FiftyOne users.

Launch the app in the non-default browser.

What areas of FiftyOne does this PR affect?

• App: FiftyOne application changes
• Build: Build and test infrastructure changes
• Core: Core fiftyone Python library changes
• Documentation: FiftyOne documentation changes
• Other

[benjaminpkane]

Awesome! Great addition. Looks like all the details are here 🙌

[codecov]

Codecov Report

Attention: 850 lines in your changes are missing coverage. Please review.

Comparison is base (14dfe52) 16.15% compared to head (47248fb) 16.23%.
Report is 10 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #3789      +/-   ##
===========================================
+ Coverage    16.15%   16.23%   +0.08%     
===========================================
  Files          643      645       +2     
  Lines        74209    74683     +474     
  Branches       984      992       +8     
===========================================
+ Hits         11988    12125     +137     
- Misses       62221    62558     +337     

Flag	Coverage Δ
app	16.23% <18.11%> (+0.08%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
app/packages/looker/src/state.ts	100.00% <100.00%> (ø)
app/packages/looker/src/worker/index.ts	98.82% <100.00%> (+0.08%)	⬆️
...ackages/relay/src/fragments/colorSchemeFragment.ts	100.00% <100.00%> (ø)
...es/relay/src/fragments/datasetAppConfigFragment.ts	100.00% <100.00%> (ø)
app/packages/relay/src/queries/dataset.ts	100.00% <100.00%> (ø)
app/packages/state/src/session.ts	74.85% <100.00%> (+0.14%)	⬆️
app/packages/utilities/src/color.ts	51.18% <100.00%> (ø)
app/packages/utilities/src/index.ts	62.53% <100.00%> (+0.30%)	⬆️
...s/core/src/components/ColorModal/GlobalSetting.tsx	0.00% <0.00%> (ø)
...es/core/src/components/FieldLabelAndInfo/index.tsx	0.00% <0.00%> (ø)
... and 25 more

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