Allow using Plover over remote desktop software (anydesk, nomachine, teamviewer, etc.)

[user202729]

As in the title. The more interesting case is when Plover is installed on the remote machine.

A long time ago I implement https://github.com/user202729/plover-xtest-input to capture input from xtest keyboard. Of course Plover itself uses xtest to simulate keyboard input too so this would lead to an infinite loop, so I used either https://github.com/user202729/plover-unused-xtest-output or https://github.com/user202729/plover-uinput-output (nowadays Plover itself has some rudimentary support for uinput, see #1679 , but I find it unsatisfactory, see #1707).

An alternative I can think of is to somehow inject a modified version of libxtst to the remote desktop software to make it send the key presses to Plover instead of X server directly, but that sounds somewhat difficult and flaky…

[mkrnr]

Thank you for the suggestion. Given how specific this use case is, I think it’s better suited for a plugin, if possible, rather than inclusion in core Plover.