[spike] Add View > Team Explorer button to GitHub pane command bar

[jcansdale]

This PR

• Add the View > Team Explorer button the the GitHub pane's command bar

• Use standard Backwards, Forwards, OpenWebSite, Refresh and StatusHelp monikers for GitHub command bar (found in KnownImageIds.vsct)Moved to Use standard image monikers for GitHub pane #1876

• Add view GitHub pane button to Team Explorer command bar

Mentioned by @sguthals in #1558

I can go back to the list view of PRs or open a browser window into GitHub, but I can't get back to the Team Explorer home. To get there, I have to go down to the bottom and click on the Team Explorer tab.

Todo

• An easy way to navigate back to the GitHub pane

When you try this functionality, the question quickly becomes; how do I get back to the GitHub pane.

I don't know if it's possible to add buttons to the Team Explorer command bar. If it was, the symmetry would make it feel pretty natural and discoverable. It would also let users easily return to GitHub from the Team Explorer - Changes view (which is a common workflow).

An alternative would be to allow users to click on the icon below GitHub to return to the GitHub pane. This wouldn't be available on the Team Explorer - Changes view, so users would need to navigate back via Home.

• There are built in monikers for Forwards, Backwards and (maybe) Home that we could use.

This would make it consistent wit the Team Explorer and Solution Explorer tool bars:

Related

• Team Explorer commands and command bar layout
  https://gist.github.com/jcansdale/619de883f37b88674393673524216474

[jcansdale]

There's an extension for viewing monikers here:
https://github.com/madskristensen/KnownMonikersExplorer

Here is the Backwards image moniker.

You can find the rest described here:

• The Visual Studio Image Library: Visual Studio Image Library 2017.pdf
  https://docs.microsoft.com/en-gb/visualstudio/designers/the-visual-studio-image-library

*Note, the name doesn't quite match in this case (Backwards vs Backward) 😕 *

[drguthals]

Thanks @jcansdale for this! I want to punt it to our first 3+1 week to get more feedback. I like this approach if it's the problem we want to solve. We may want to be solving a different problem though - making it less streamlined.

[drguthals]

LGTM

[jcansdale]

@sguthals Woot! 🎉 😜

[drguthals]

Starting review

[drguthals]

Testing

[drguthals]

Testing

[drguthals]

Test

[jcansdale]

I've extracted the following commits to separate PRs (they shouldn't have been included in this PR):

• Use OpenWebSite image for View/Open on GitHub #1877 Use OpenWebSite image for View/Open on GitHub
• Use standard image monikers for GitHub pane #1876 Use standard image monikers for GitHub pane