* Complete basic Raspberry Pi LCD screen information + hardware

[RuhanSA079]

Using a Raspberry Pi:

• Configure the INA219 current sensor, poll and print the information on the LCD.
• Show the current configured radio tx power (max 3000) to the LCD
• Add single button ability to tune the txpower by 250 value increments (from 300 to 3000)
• Already implemented basic discovery counter, but populate a list of direct peer nodes and order by RSSI
• Implement safe shutdown by button (implement basic UI with one button)
  -Long press to select, short press to select other menu item (tx power)

[RuhanSA079]

[WIPR] Already implemented basic discovery counter, but populate a list of direct peer nodes and order by RSSI
[WIPR] Long press to select, short press to select other menu item (tx power)
[DONE] Configure the INA219 current sensor, poll and print the information on the LCD.
[DONE] Show the current configured radio tx power (max 3000) to the LCD
[DONE] Add single button ability to tune the txpower by 250 value increments (from 300 to 3000)
[DONE] Implement safe shutdown by button (implement basic UI with one button)