Show Git Pending Changes Count

[wbtacc]

Issue: Given horizontal orientation of Activity Bar, source control icon does not show notification/badge.

Workaround: Set Activity Bar orientation (workbench.activityBar.orientation) to vertical. ( Source Control Notifications - #2 by Jakob )

Reports:

• Source Control icon in the panel does not indicate about the uncommited changes
• VSCode traditional side panel option
• The horizontal activity bar should have the same badges as the vertical bar - #13 by pbechliv
• Show Git Pending Changes Count
• Show git diff notification like this