Hud elements cat_file function

[kokoko3k]

Acts like exec=cat /something.txt

...and I cloned as much as possible the existing exec implementation.

[gort818]

Why not just use exec=cat /something.txt ?

[kokoko3k]

Why not just use exec=cat /something.txt ?

Efficiency. Why spawning a new process every 1/2 second? :)