add stm32wl5e platform and wio-e5 variant (#1631)

Co-authored-by: Peter Lawrence <12226419+majbthrd@users.noreply.github.com>
Co-authored-by: Ben Meadors <benmmeadors@gmail.com>

src/platform/stm32wl/architecture.h

@@ -0,0 +1,31 @@
+#pragma once
+
+#define ARCH_STM32WL
+
+//
+// defaults for STM32WL architecture
+//
+
+//
+// set HW_VENDOR
+//
+
+#ifndef HW_VENDOR
+    #define HW_VENDOR HardwareModel_PRIVATE_HW
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+    void stm32wl_emulate_digitalWrite(long unsigned int pin, long unsigned int value);
+    int stm32wl_emulate_digitalRead(long unsigned int pin);
+#ifdef __cplusplus
+}
+#endif
+
+/* virtual pins for stm32wl_emulate_digitalWrite() / stm32wl_emulate_digitalRead() to recognize */
+#define SX126X_CS    1000
+#define SX126X_DIO1  1001
+#define SX126X_RESET 1003
+#define SX126X_BUSY  1004
+