Support TLORA_V3.0 (#5563)

- Support TLORA_V3.0. Update of the legendary 2.1_1.6.1 with solar charger, TCXO and IPEX connector.
- 'extra' some short-lived EOL intermediate boards in that range. If possible use T3S3 instead of all of these!
- update trunk to latest version

variants/tlora_v2_1_16_tcxo/platformio.ini

@@ -1,5 +1,6 @@
 [env:tlora-v2-1-1_6-tcxo]
 extends = esp32_base
+board_level = extra
 board = ttgo-lora32-v21
 build_flags = 
   ${esp32_base.build_flags}

variants/tlora_v2_1_18/platformio.ini

@@ -1,5 +1,6 @@
 [env:tlora-v2-1-1_8]
 extends = esp32_base
+board_level = extra
 board = ttgo-lora32-v21
 
 build_flags = 

variants/tlora_v3_3_0_tcxo/platformio.ini

@@ -0,0 +1,11 @@
+[env:tlora-v3-3-0-tcxo]
+extends = esp32_base
+board = ttgo-lora32-v21
+board_level = extra
+build_flags = 
+  ${esp32_base.build_flags}
+  -D TLORA_V2_1_16
+  -I variants/tlora_v2_1_16
+  -D GPS_POWER_TOGGLE ; comment this line to disable triple press function on the user button to turn off gps entirely.
+  -D LORA_TCXO_GPIO=12
+  -D BUTTON_PIN=0