Automatically detecting the environment vars

[mtekman]

I'm currently doing a lot of automation on Phosh (Wayland) desktop, and all the other peripheral automation tools fail spectacularly unless the correct environment variables are set:
e.g.

• DISPLAY
• XAUTH or XAUTHORITY
• XDG_RUNTIME_DIR

Wtype doesn't need any of that, or automatically detects these things itself.

Sure, it's limited in scope (it just types), but what it can do, it does exceedingly and reliably well.

This is not an issue, this is just praise.