Select All in Problem view

[lmcbout]

Description

The Problems view should have Select All command similar to the debug console.
Current side-effect, it highlight the line range of the open editor right now

Reproduction Steps

Open a workspace which has some problems reported in the "Problem" view
Open a file in the editor
Select the Problem view and "CTRL +a" to Select All
--> observe the line range in the editor, it is also selected

OS and Theia version:
Theia 1.0 latest
Ubuntu 18.04

Diagnostics:

[vince-fugnitto]

@lmcbout I'm not sure we should open an issue for every view, but rather we do it generally as commented already:

• ctrl+f defaults to the browser search #7525 (comment)
• GH-7521: Enabled Select All in the Output #7523 (comment)

[vince-fugnitto]

I think the 'select all' in the problems-view should be a noop like in VS Code.
We can individually copy messages, but not select the entire widget and copy.

[akosyakov]

I think the 'select all' in the problems-view should be a noop like in VS Code.

ok, then it can be resolved by #7525 (comment)

No, actually select all globally delegates to DOM in VS Code. If it should be no-op for the problems view then the handler should be installed in the problem view extension.