Add ability to abort a toolchain build or test operation

[mengdaming]

Description:

With this change, TCR now provides a way to interrupt a toolchain build or test command without waiting for it to complete.

• From the CLI, this can be achieved through the a / A shortcut
• From the webapp, this can be achieved through a button Abort Current Command located at the bottom of the TCR Console page

Impact on TCR behavior:

• Aborting a build command execution implies that the build is considered as failed, thus tests are not executed and no file gets reverted
• Aborting a test command execution implies that the tests are considered as failed, thus leading to reverting latest changes in production code

Fixes #694

Type of change

Please tick the appropriate option using [x]

• Bug fix
• New feature

Checklist:

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• My PR includes tests that cover my code changes.
• Lint and formatter run with no errors
• All new and old tests are passing

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
94.9% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[aatwi]

Overall, the PR looks good! I just noticed that some TS files do not have the copyright section

[mengdaming]

indeed. This is probably the case for most if not all of them.

I propose that we merge this PR, then I'll run a global update adding the copyright header in all TS files in one shot. WDYT?