wio-e5 : make distinct targets for dev board and mini dev board

variants/wio-e5-mini/target.h

@@ -0,0 +1,33 @@
+#pragma once
+
+#define RADIOLIB_STATIC_ONLY 1
+#include <RadioLib.h>
+#include <helpers/RadioLibWrappers.h>
+#include <helpers/stm32/STM32Board.h>
+#include <helpers/CustomSTM32WLxWrapper.h>
+#include <helpers/ArduinoHelpers.h>
+#include <helpers/SensorManager.h>
+
+class WIOE5Board : public STM32Board {
+public:
+    const char* getManufacturerName() const override {
+        return "Seeed Wio E5 mini";
+    }
+
+    uint16_t getBattMilliVolts() override {
+        analogReadResolution(12);
+        uint32_t raw = analogRead(PIN_A3);            
+        return raw;
+    }
+};
+
+extern WIOE5Board board;
+extern WRAPPER_CLASS radio_driver;
+extern VolatileRTCClock rtc_clock;
+extern SensorManager sensors;
+
+bool radio_init();
+uint32_t radio_get_rng_seed();
+void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
+void radio_set_tx_power(uint8_t dbm);
+mesh::LocalIdentity radio_new_identity();