add nugget and nibble boards for 38c3 (#5609)

* add nugget and nibble boards for 38c3

* mark those boards extra for now

variants/nibble_esp32/platformio.ini

@@ -0,0 +1,6 @@
+[env:nibble-esp32]
+extends = esp32s3_base
+board = esp32-s3-zero
+board_level = extra
+build_flags = 
+  ${esp32_base.build_flags} -D PRIVATE_HW -I variants/nibble_esp32

variants/nibble_esp32/variant.h

@@ -0,0 +1,18 @@
+#define I2C_SDA 11 // I2C pins for this board
+#define I2C_SCL 10
+
+#define LED_PIN 1 // If defined we will blink this LED
+
+#define BUTTON_PIN 0 // If defined, this will be used for user button presses
+#define BUTTON_NEED_PULLUP
+
+#define USE_RF95
+#define LORA_SCK 6
+#define LORA_MISO 7
+#define LORA_MOSI 8
+#define LORA_CS 9
+#define LORA_DIO0 5 // a No connect on the SX1262 module
+#define LORA_RESET 4
+
+#define LORA_DIO1 RADIOLIB_NC
+#define LORA_DIO2 RADIOLIB_NC

variants/nibble_rp2040/platformio.ini

@@ -0,0 +1,17 @@
+[env:nibble-rp2040]
+extends = rp2040_base
+board = rpipico
+board_level = extra
+upload_protocol = picotool
+
+# add our variants files to the include and src paths
+build_flags = ${rp2040_base.build_flags} 
+  -DPRIVATE_HW
+  -Ivariants/nibble_rp2040
+  -DDEBUG_RP2040_PORT=Serial
+  -DHW_SPI1_DEVICE
+  -L "${platformio.libdeps_dir}/${this.__env__}/bsec2/src/cortex-m0plus"
+lib_deps =
+  ${rp2040_base.lib_deps}
+debug_build_flags = ${rp2040_base.build_flags}, -g
+debug_tool = cmsis-dap ; for e.g. Picotool

variants/nibble_rp2040/variant.h

@@ -0,0 +1,18 @@
+#define ARDUINO_ARCH_AVR
+
+#define BUTTON_PIN -1 // Pin 17 used for antenna switching via DIO4
+
+#define LED_PIN 1
+
+#define HAS_CPU_SHUTDOWN 1
+
+#define USE_RFM95
+#define LORA_SCK 10
+#define LORA_MISO 12
+#define LORA_MOSI 11
+#define LORA_CS 13
+
+#define LORA_DIO0 14
+#define LORA_RESET 15
+#define LORA_DIO1 RADIOLIB_NC
+#define LORA_DIO2 RADIOLIB_NC

variants/nugget_s2_lora/platformio.ini

@@ -0,0 +1,6 @@
+[env:nugget-s2-lora]
+extends = esp32s2_base
+board = lolin_s2_mini
+board_level = extra
+build_flags = 
+  ${esp32s2_base.build_flags} -D PRIVATE_HW -I variants/nugget_s2_lora

variants/nugget_s2_lora/variant.h

@@ -0,0 +1,23 @@
+#define I2C_SDA 34 // I2C pins for this board
+#define I2C_SCL 36
+
+#define LED_PIN 15 // If defined we will blink this LED
+
+#define HAS_NEOPIXEL                         // Enable the use of neopixels
+#define NEOPIXEL_COUNT 3                     // How many neopixels are connected
+#define NEOPIXEL_DATA 12                     // gpio pin used to send data to the neopixels
+#define NEOPIXEL_TYPE (NEO_GRB + NEO_KHZ800) // type of neopixels in use
+
+#define BUTTON_PIN 0 // If defined, this will be used for user button presses
+#define BUTTON_NEED_PULLUP
+
+#define USE_RF95
+#define LORA_SCK 6
+#define LORA_MISO 8
+#define LORA_MOSI 10
+#define LORA_CS 13
+#define LORA_DIO0 16
+#define LORA_RESET 5
+
+#define LORA_DIO1 RADIOLIB_NC
+#define LORA_DIO2 RADIOLIB_NC

variants/nugget_s3_lora/platformio.ini

@@ -0,0 +1,6 @@
+[env:nugget-s3-lora]
+extends = esp32s3_base
+board = lolin_s3_mini
+board_level = extra
+build_flags = 
+  ${esp32s3_base.build_flags} -D PRIVATE_HW -I variants/nugget_s3_lora

variants/nugget_s3_lora/variant.h

@@ -0,0 +1,23 @@
+#define I2C_SDA 34 // I2C pins for this board
+#define I2C_SCL 38
+
+#define LED_PIN 15 // If defined we will blink this LED
+
+#define HAS_NEOPIXEL                         // Enable the use of neopixels
+#define NEOPIXEL_COUNT 3                     // How many neopixels are connected
+#define NEOPIXEL_DATA 10                     // gpio pin used to send data to the neopixels
+#define NEOPIXEL_TYPE (NEO_GRB + NEO_KHZ800) // type of neopixels in use
+
+#define BUTTON_PIN 0 // If defined, this will be used for user button presses
+#define BUTTON_NEED_PULLUP
+
+#define USE_RF95
+#define LORA_SCK 6
+#define LORA_MISO 7
+#define LORA_MOSI 8
+#define LORA_CS 9
+#define LORA_DIO0 16 // a No connect on the SX1262 module
+#define LORA_RESET 4
+
+#define LORA_DIO1 RADIOLIB_NC
+#define LORA_DIO2 RADIOLIB_NC