[Feature] Add copy button in console (web app)

To copy the console content, first we have to goto "Edit"->"Select All" then "Edit"->"Copy". This is a lengthy process for a such a common and useful task. To improve this, we can add a copy icon directly in the console header. This will serve 2 purposes:-

1. If there is no current selection then it will automatically select all "console text" and copy it to clipboard.
2. If currently some text is selected it will copy that text to clipboard.

This feature will improve the usability and UX.

Current:

Ubuntu__Running__-_Oracle_VM_VirtualBox_2021-04-16_17-48-17_Trim

Expected:

Ubuntu__Running__-_Oracle_VM_VirtualBox_2021-04-16_17-45-05_Trim