WIP: unify the RAK targets into one firmware (#1350)

* First steps to unify GPS Lib for RAK 1910 and RAK 12500

* Technicalities. Out with the old and build the new.

* Adapt Matrix

* We use 0.4.5 now

* While we're at it, yank the RAK815, it's EOL

* Satisfy CI - for now

* - yank UBX library, talk to GPS chip with NMEA only.
- more autodetect going on, this time for the Eink Display.

TODO: actually do something with the scan findings.

* i swear this works on windows! :-)

* these are only there to make CI happy

* don't update eink display if not detected.

* Replace Oberon Crypt Library with modified Adafruit Library. This elimintaes the need for the sdk-nfxlib submodule.

* - Revert auto screen selection (incomplete)
- Revert nrF crypto engine (needs more work)
- add separate defines for not-auto-selecting screen lib.

* Define 2 new variants for RAK - with or without epaper

* Update variants

Co-authored-by: Sacha Weatherstone <sachaw100@hotmail.com>
Co-authored-by: Ben Meadors <thebentern@tuta.io>

src/graphics/Screen.cpp

@@ -815,12 +815,25 @@ void _screen_header()
 }
 #endif
 
+// #ifdef RAK4630
+// Screen::Screen(uint8_t address, int sda, int scl) : OSThread("Screen"), cmdQueue(32), dispdev(address, sda, scl), dispdev_oled(address, sda, scl), ui(&dispdev)
+// {
+//     address_found = address;
+//     cmdQueue.setReader(this);
+//     if (screen_found) {
+//         (void)dispdev;
+//         AutoOLEDWire dispdev = dispdev_oled;
+//         (void)ui;
+//         OLEDDisplayUi ui(&dispdev);
+//     }
+// }
+// #else
 Screen::Screen(uint8_t address, int sda, int scl) : OSThread("Screen"), cmdQueue(32), dispdev(address, sda, scl), ui(&dispdev)
 {
     address_found = address;
     cmdQueue.setReader(this);
 }
-
+// #endif
 /**
  * Prepare the display for the unit going to the lowest power mode possible.  Most screens will just
  * poweroff, but eink screens will show a "I'm sleeping" graphic, possibly with a QR code