update flameshot script to be universal

[NotAShelf]

• wayland support
• experimental local screenshots if domain & key are left empty

Checklist

• I have read the Contributing Guidelines
• I acknowledge that any submitted code will be licensed under the ISC License
• I confirm that submitted code is my own work (partially)
• I have tested the code, and confirm that it works

Enviroment

• Operating System: NixOS 6.5.5-xanmod1
• Tested On: only NixOS

Description

The script now supports Wayland through the help of Wayland native tools (such as grim and slurp) instead of attempting to get Flameshot to work on Sway and other wl-roots based compositors.

Additionally, it fixes a possible bug that went unnoticed with the if [[ -f $FILE ]] condition check.

Lastly, support for local screenshots are added and any screenshot taken with the script while KEY and DOMAIN values are null will be copied to the clipboard directly instead of throwing an error and exiting the script.

tl;dr:

• wayland support
• error turned into feature (local screenshots)
• bug fix
• logic and syntax improvements
• script is now more verbose

Dependencies: (Wayland)

• grim
• slurp
• wl-clipboard

[samip5]

I have been using this pretty much daily and works great. Thank you. :)

[tycrek]

I'll aim to merge this with ass 0.15.0 and the universal script that exists on that branch.

[NotAShelf]

I'll aim to merge this with ass 0.15.0 and the universal script that exists on that branch.

I'll do some tweaking to the script, please do give me a headsup before merging

[NotAShelf]

should be ready now

[tycrek]

Looks awesome; I'll merge in for now and combine it with the flameshot-v2.sh script at some point.