Add a bluetooth manager script with dmenu using blutoothctl

[mhdzli]

Modification of rofi-bluetooth script to use dmenu instead of rofi

[anntnzrb]

Upon simple inspection this can be easily re-written in POSIX sh; also avoid using echo whenever possible.

[appeasementPolitik]

Code where there is one if and an else and one command per condition, like at line 22,

    if bluetoothctl show | grep -q "Powered: yes"; then
        return 0
    else
        return 1
    fi

can also be rewritten to this:

    bluetoothctl show | grep -q "Powered: yes" &&
        return 0 ||
        return 1

Also "Rofi" at line 298 should become "Dmenu", and the shebang at the top should be replaced with #!/bin/sh.

You can easily verify POSIX compliance with the shellcheck command.

[appeasementPolitik]

Hey, I tested this script and thought it was very useful. Didn't even know this computer had bluetooth. I also rewrote the script to POSIX sh, which you can find at the pull requests of your fork.

[appeasementPolitik]

Added sb-bluetooth as well

[appeasementPolitik]

Added new pull request on your fork with some bug fixes

[appeasementPolitik]

@mhdzli new commit on the PR on your fork with the fix for the above problem and some other improvements, would you consider merging?