Added Support for the Waveshare 2.7 Inch V2 e-Ink display

[UnaKarlsen]

Description

I started with the existing Waveshare 2.7 Inch driver, and swapped out the necessary library from Waveshare for version 2 one, and modify the uses of the clear() function to not specify a background colour as V2 does not take arguments in it's implementation of clear().

This was all that was needed in order to make the driver work.

Motivation and Context

• I have raised an issue to propose this change (required)

How Has This Been Tested?

I have successfully run this new code on my 2.7 inch v2 hardware for several weeks now with no issues.
Tests were run with a Raspberry Pi Zero W.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I've read the CONTRIBUTION guide
• I have signed-off my commits with git commit -s

[oreoorin6]

yes

[tcsabina]

How to make this work?
Do we need to create an image after this is merged? Can I try this without it?
I can change/add the files of this PR to my running OS, but I am not sure what do I need to do after it?
Simply adding the 'waveshare27inch_V2' as display in the 'config.taml' file ends up with this error:

pi@Edison:~ $ pwnagotchi
unsupported display type waveshare27inch_V2

[tcsabina]

This made it work:

1. Shut down the pwnagotchi service (systemctl stop pwnagotchi)
2. Replace the source located in /usr/local/lib/python3.7/site-packages/pwnagotchi with the changes from this PR
3. Restart the pwnagotchi service and verify screen is correctly initialised and pwnagotchi displayed on it

[Jimboow]

I dont find the right path i just got the python 3.7/dist-packages and no site-packages path didnt bring it to work

[tcsabina]

I dont find the right path i just got the python 3.7/dist-packages and no site-packages path didnt bring it to work

Maybe you are on the wrong folder?
Do a find / -type d -name "dist-packages" to list all folders called dist-packages...

[Jimboow]

I used the find command and found usr/local/lib/python2.7/site-packages
And usr/local/lib/python3.7/dist-packages
In the 3.7 how explained i didnt have a site-packages path