BACKPLATE: redesign ideas

[ArcticSnow]

List of redesign criteria for the backplate:

1. remove all the battery holder placer as we do not use them. Reconfigure with battery pack instead.
2. add screw terminal (or the battery connector) for attaching the batteries
3. move all connectivity and teminal to the top of the back plate that they are the last to dip in possible water inside the box.
4. leave some room in between the bottom of the box and the backplate
5. design it that we can add at least 2 battrery pack in parallel if not more
6. hole to attach solar panel wire with ziptie. (for when opening the box an dnot rip the screw terminal
7. Add 3.5x1.1mm female plug for solar panel
8. think about GPS antenna to the top part of the box
9. place QT Py board (with I2C connectors for lagopus)