[EE 4.4+ Fix] Better Game Controller Bluetooth Support.

[Langerz82]

[EE 4.4+ Fix] Better Game Controller Bluetooth Support.

To test on a current build just copy the emuelec-bluetooth file to /emuelec/scripts and give it execution priviledges. In SSH do:

cd /emuelec/scripts
wget https://raw.githubusercontent.com/EmuELEC/EmuELEC/a2f815bb3ea4039a58260e1c5798ab3f4ceae0b0/packages/sx05re/emuelec/bin/batocera/emuelec-bluetooth
chmod +x /emuelec/scripts/emuelec-blueooth

reboot.

By default like during boot it will run for 1 minute at 5 second intervals. It will not start a new scan during an emulator launch, this is automatic, unless there is zero wireless connected devices.

This is a revised version that relies on blueooth notifications rather than polling every second or so, so it should perform much faster than its predicessor. Special thanks goes to @ebeem for working hard on this python script.

Credits info:

################################################################################
# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright (C) 2023-present ebeem (https://github.com/ebeem)
# Modifications made by:
#   Langerz82 (https://github.com/Langerz82)
#   wang80919 (https://github.com/wang80919)
# Testing done by:
#   junm6802030 (https://github.com/junm6802030)
# Special thanks to everyone who worked on this.
################################################################################

refs:
#1194
#783
#1076
#1072
#1083
#877

[qphoria]

Hi. I tried running this on my 4.4 install and I get the following when I try to run it manually via terminal session

EMUELEC:~ # emuelec-bluetooth
Traceback (most recent call last):
  File "/emuelec/scripts/emuelec-bluetooth", line 58, in <module>
    class BluetoothCTL:
  File "/emuelec/scripts/emuelec-bluetooth", line 59, in BluetoothCTL
    async_bluetooth_process: Popen | None
TypeError: unsupported operand type(s) for |: 'type' and 'NoneType'

[qphoria]

Ok looks like emuelec 4.4 has python 3.8 which didn't support pipe without quotes.
So change this
async_bluetooth_process: Popen | None
to this:
async_bluetooth_process: "Popen | None"

[Langerz82]

ready to commit