Added I2C address scan

include/sta/bus/i2c/i2c.hpp

@@ -35,11 +35,19 @@ namespace sta
          */
         void setSettings(uint16_t address, bool master, bool blocking);
 
+        /**
+         * @brief Checks if a device with the given address is connected to the I2C bus.
+         * 
+         * @param address The address to check availability for.
+         * @return true if the address exists, false otherwise.
+         */
+        virtual bool hasAddress(int address) = 0;
+
         /**
          * @brief Prints all available addresses via the debug printable.
          * 
          */
-        virtual void addressScan() = 0;
+        void scanAddresses();
     protected:
     	/// @brief The peripheral's address to communicate with.
     	uint16_t address_;