[IDEA] Pirate Audio 240x240 cover display

[rusconi]

@maartin  and @juantronik

I have made some enhancements to the cover display script, and i am hoping you can test tit on your pirate audio.

Firstly I have created new github repository with a new name -  TFT-MoodeCoverArt - and taken tft-cover offline.

If you are willing to test, the instructions are in the readme file.
but basically, if you already have tft-cover running:

git clone https://github.com/rusconi/TFT-MoodeCoverArt.git
cd TFT-MoodeCoverArt
sudo chmod u+x TFT-MoodeCoverArt.sh

to run:

/home/pi/TFT-MoodeCoverArt/TFT-MoodeCoverArt.sh -s

to stop:

/home/pi/TFT-MoodeCoverArt/TFT-MoodeCoverArt.sh -q

If tft-cover is running at boot:

to stop temporarily:

sudo systemctl stop tft-cover

to disable over a reboot:

sudo systemctl disable tft-cover.service

@maartin 

Some improvement to coping with light background colours

@juantronik 

some improvement to scrolling text
I could not replicate the issue with text overlaying itself, but hopefully the scrolling changes will help

As before, I haven't any issues on my ST7735, so hoping the pirateaudio is ok

Thanks
Russ