Handle 'workbench.action.addRootFolder' vscode command

[tomer-epstein]

Signed-off-by: Tomer Epstein tomer.epstein@sap.com

What it does
This change proposal adds ability to handle workbench.action.addRootFolder command.

How to test
git clone https://github.com/tomer-epstein/vscode-add-Root-Folder
cd vscode-add-Root-Folderr
npm run compile && npm run package
copy vscode-add-Root-Folder-0.0.1.vsix to plugins folder
F1, choose 'Add Root Folder'.

Review checklist

• as an author, I have thoroughly tested my changes and carefully followed the review guidelines

Reminder for reviewers

• as a reviewer, I agree to behave in accordance with the review guidelines

[tomer-epstein]

@vince-fugnitto This PR with correct ECA.

[vince-fugnitto]

@tomer-epstein the changes worked correctly for me, thank you for your contribution!

[tomer-epstein]

@vince-fugnitto does the ripgrep download failure a known issue?
https://travis-ci.com/github/eclipse-theia/theia/jobs/298557964

[vince-fugnitto]

@vince-fugnitto does the ripgrep download failure a known issue?
https://travis-ci.com/github/eclipse-theia/theia/jobs/298557964

Yes it happens when working on forks for non-committers.

• [contributor experience] CI often fails for non-committers #3787

[tomer-epstein]

@vince-fugnitto does the ripgrep download failure a known issue?
https://travis-ci.com/github/eclipse-theia/theia/jobs/298557964

Yes it happens when working on forks for non-committers.

• [contributor experience] CI often fails for non-committers #3787

@vince-fugnitto do you have the privileges to re-triger the job or can make it pass?

[tomer-epstein]

@vince-fugnitto thanks. the build passed.

[vince-fugnitto]

@vince-fugnitto thanks. the build passed.

Great! I manually restarted it for you.

[vince-fugnitto]

Thank you for your contribution! I look forward to many more in the future.