git+binary workflow fix

[mohitsuman]

1. Add context folder selection at start for git workflow
2. Use workspace.ts for folderSelection for git & binary workflow
3. Check for component folder already existing at the selected path.

Fix #1159

[dgolovin]

Calling file inside util module as workspaceUtil.ts is too much 'util' ;)
Have you checked workspace.ts BTW?

[mohitsuman]

Calling file inside util module as workspaceUtil.ts is too much 'util' ;)
Have you checked workspace.ts BTW?

workspace.ts is renamed as workspaceUtil. As class workspace from vscode was conflicting.

[dgolovin]

LGTM