Feat/work issue filter and stop work

[danstreeter]

Changes as below:

• Added settings option to choose filter for 'Set Working Issue' function to allow for switching to work on any issue in project. (WORKING_ISSUES (default) or ALL)
• Added ability to stop working on issue and immediately add comment and submit, or quit.
• Added Command Palette option to 'Set Working Project'
• Added Command Palette option to 'Set Working Issue'
• Added Command Palette option to 'Stop Working On Issue'
• Added color to 'No Working Issue' text in status bar for better visibility

[gioboa]

I looked at your code and I really appreciate it. :+1: Thanks for your time and your contributions. :rocket: