Improvements for intelligent commands - P2

[slemeur]

Goals

The goal of this issue is to polish intelligent commands UX and UI similarly to the issue #4295
This issue covers the various feedbacks received during the beta.

UX Improvements

• Goal improvement

• Clicking everyone on the dropdown must expand the list of choices. At this moment, user has to click only on the v arrow which is not convenient.

• We need to get ride of the ability to edit in the dropdown to create a new goal. We will list all the existing commands and have the last choice "New Command Goal...". If the user clicks on it, we will display a popup with title "New Command Goal" with a textfield and buttons [Create] [Cancel]. (when the popup is opened, the textfield is having the focus, so user can directly input)

• Shortcut for default "Run" and "Debug" commands
  Would suggest cmd+R for "Run" and cmd+D for "Debug"

• Properly close the command toolbar
  When the user stops a process from drop down the tab in process panel does not close.

• Previews dropdown menu not working
  Some areas in the dropdown are not allowing to select the preview.

• Add tooltip for process ID in command toolbar

• Refreshing the browser or reopening the workspace should reopen previous command's editors

• Properly clean the list of previews when a command is stopped
  QA reported situations where the list of previews is not cleaned after the commands have been stopped.

UI improvements

• Light theme
  We need to adopt the light theme for the command toolbar:
  

• Don't display editor details
  We are displaying UTF-8 text/x-sh in command line + preview editors. This is not necessary.

[azatsarynnyy]

This issue has been separated to #4442 and #4590
And fixed by related PRs #4611 #4700 #4707