Waveshare_7_5_T7: Fix case "PoP"

Update temperature display to use Daily data

Update Licence.txt with new usage restrictions

Change greeting from 'Hello World' to 'Goodbye World'

Update print statement from 'Hello' to 'Goodbye'

Update fmt.Println message from 'Hello' to 'Goodbye'

Update 3hr forecast drawing logic with daily data

Add files via upload

Update common.h

Delete src/common_functions.h

Delete src/common_functions.cpp

Delete src/forecast_record.h

Update Waveshare_7_5_3C.ino

Update Waveshare_9_7.ino

Update Waveshare_7_5_T7.ino