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>

bin/build-all.sh

@@ -9,7 +9,7 @@ BOARDS_ESP32="rak11200 tlora-v2 tlora-v1 tlora_v1_3 tlora-v2-1-1.6 tbeam heltec-
 #BOARDS_ESP32=tbeam
 
 # FIXME note nrf52840dk build is for some reason only generating a BIN file but not a HEX file nrf52840dk-geeksville is fine
-BOARDS_NRF52="rak4631_5005 rak4631_5005_eink rak4631_19003 t-echo pca10059_diy_eink"
+BOARDS_NRF52="rak4631 rak4631_eink t-echo pca10059_diy_eink"
 #BOARDS_NRF52=""
 
 OUTDIR=release/latest