screenshot keybindings

**Is your feature request related to a problem? Please describe.**
huge problem

**Describe the solution you'd like**
scrot kbi for Print key + modifiers for

- whole screen
- focused/any window
- grab area
- one of the chrome annotation extensions

prompt for filename and/or xclip

**Describe alternatives you've considered**
flameshot etc.

**Additional context**
just need something simple and light mem