improve text selection in debug window

[BartolomeSintes]

🚀 Feature Proposal

1. Some editors (VSCode for instance) allow the selection of the whole document clicking four times in a row. It would be nice if the debug window (the one in the right bottom corner) allowed this kind of text selection.
2. The Control+a shortcut is another way of selecting the whole text in a document. This shortcut works in Selenium, but it shortcut copies part of the contents of the other windows and many blank lines. It should select just the debug window (or better, the focused window).

[toddtarsi]

@BartolomeSintes - I agree, this is important. I would also like to support text search as well. Unfortunately, this didn't make it into v97, but should be in v98