move embedded tutorials out of protocol tree

tutorials/esp32/uart-bridge/main/main.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include "mongoose.h"
+
+#include "driver/gpio.h"
+#include "driver/uart.h"
+#include "esp_spiffs.h"
+#include "freertos/FreeRTOS.h"
+
+#define FS_ROOT "/spiffs"
+#define WIFI_FILE FS_ROOT "/wifi.json"
+#define UART_NO 1
+
+void uart_bridge_fn(struct mg_connection *, int, void *);
+int uart_read(void *buf, size_t len);
+bool wifi_init(const char *ssid, const char *pass);
+void cli(uint8_t ch);
+void cli_init(void);