Automated integration testing for dev mode capabilities

[kathrynkodama]

Automated testing for UI actions: start, start..., stop, etc.

Depends on #115

Use FVT Overview as a guide on what test coverage is required, specifically the Installation and Dev mode integration (Actions, UI elements, Detecting Liberty projects, Maven/Gradle/Java) sections. Make sure to test Maven and Gradle projects and use all methods of triggering actions (ie. dashboard, command palette, and hot keys).

Use VS Code FVT plan as a guide for steps to use for writing the tests.

• Devmode test test for "Start with container" for dev mode capabilities automation #229
• Devmode test for Debug action in dev mode capabilities automation #230
• Devmode Test for Start, start with param for dev mode capabilities test automation #228
• Devmode <Init, Add test projects > init, cleanup tasks for linking starter project with the automation tests #231

[dselvara2]

Devmode (Start/stop action) test automation -#228

[vkavitha]

Devmode test #229
Devmode #230
Devmode #228
Devmode <Init, Add test projects > #231