Add distance sensor, rewrite OLED to use new i2c library

components/oled/include/Oled.h

@@ -1,6 +1,7 @@
 
 #include <cstdint>
 #include <string>
+#include "driver/i2c_master.h"
 
 #ifndef OLED_H
 #define OLED_H
@@ -18,6 +19,8 @@ private:
     void init(uint8_t sda_pin, uint8_t scl_pin);
     void rotate8x8(uint8_t in[8], uint8_t out[8]);
 
+    i2c_master_bus_handle_t bus_handle = nullptr;
+    i2c_master_dev_handle_t dev_handle = nullptr;
 };
 
 #endif // OLED_H