Updated project structure and some file names.

Restored `requirements.txt`

Updated `setup.py` to include new repository url and contact details.

Moved the rtsp code from `record` to `stream`.

Updated project structure to make it more readable and developer friendly - moved mixins to the `mixins` package, moved handlers to the `handlers` package.

Moved files not belonging to anything in particular to the `util` package.

Updated `camera` class to also defer login call.

Deleted unused files like `config_handler`.

reolinkapi/mixins/ptz.py

@@ -0,0 +1,123 @@
+from typing import Dict
+
+
+class PtzAPIMixin:
+    """
+    API for PTZ functions.
+    """
+    def _send_operation(self, operation: str, speed: float, index: float = None) -> Dict:
+        # Refactored to reduce redundancy
+        param = {"channel": 0, "op": operation, "speed": speed}
+        if index is not None:
+            param['id'] = index
+        data = [{"cmd": "PtzCtrl", "action": 0, "param": param}]
+        return self._execute_command('PtzCtrl', data)
+
+    def _send_noparm_operation(self, operation: str) -> Dict:
+        data = [{"cmd": "PtzCtrl", "action": 0, "param": {"channel": 0, "op": operation}}]
+        return self._execute_command('PtzCtrl', data)
+
+    def _send_set_preset(self, enable: float, preset: float = 1, name: str = 'pos1') -> Dict:
+        data = [{"cmd": "SetPtzPreset", "action": 0, "param": {
+            "channel": 0, "enable": enable, "id": preset, "name": name}}]
+        return self._execute_command('PtzCtrl', data)
+
+    def go_to_preset(self, speed: float = 60, index: float = 1) -> Dict:
+        """
+        Move the camera to a preset location
+        :return: response json
+        """
+        return self._send_operation('ToPos', speed=speed, index=index)
+
+    def add_preset(self, preset: float = 1, name: str = 'pos1') -> Dict:
+        """
+        Adds the current camera position to the specified preset.
+        :return: response json
+        """
+        return self._send_set_preset(enable=1, preset=preset, name=name)
+
+    def remove_preset(self, preset: float = 1, name: str = 'pos1') -> Dict:
+        """
+        Removes the specified preset
+        :return: response json
+        """
+        return self._send_set_preset(enable=0, preset=preset, name=name)
+
+    def move_right(self, speed: float = 25) -> Dict:
+        """
+        Move the camera to the right
+        The camera moves self.stop_ptz() is called.
+        :return: response json
+        """
+        return self._send_operation('Right', speed=speed)
+
+    def move_right_up(self, speed: float = 25) -> Dict:
+        """
+        Move the camera to the right and up
+        The camera moves self.stop_ptz() is called.
+        :return: response json
+        """
+        return self._send_operation('RightUp', speed=speed)
+
+    def move_right_down(self, speed: float = 25) -> Dict:
+        """
+        Move the camera to the right and down
+        The camera moves self.stop_ptz() is called.
+        :return: response json
+        """
+        return self._send_operation('RightDown', speed=speed)
+
+    def move_left(self, speed: float = 25) -> Dict:
+        """
+        Move the camera to the left
+        The camera moves self.stop_ptz() is called.
+        :return: response json
+        """
+        return self._send_operation('Left', speed=speed)
+
+    def move_left_up(self, speed: float = 25) -> Dict:
+        """
+        Move the camera to the left and up
+        The camera moves self.stop_ptz() is called.
+        :return: response json
+        """
+        return self._send_operation('LeftUp', speed=speed)
+
+    def move_left_down(self, speed: float = 25) -> Dict:
+        """
+        Move the camera to the left and down
+        The camera moves self.stop_ptz() is called.
+        :return: response json
+        """
+        return self._send_operation('LeftDown', speed=speed)
+
+    def move_up(self, speed: float = 25) -> Dict:
+        """
+        Move the camera up.
+        The camera moves self.stop_ptz() is called.
+        :return: response json
+        """
+        return self._send_operation('Up', speed=speed)
+
+    def move_down(self, speed: float = 25) -> Dict:
+        """
+        Move the camera down.
+        The camera moves self.stop_ptz() is called.
+        :return: response json
+        """
+        return self._send_operation('Down', speed=speed)
+
+    def stop_ptz(self) -> Dict:
+        """
+        Stops the cameras current action.
+        :return: response json
+        """
+        return self._send_noparm_operation('Stop')
+
+    def auto_movement(self, speed: float = 25) -> Dict:
+        """
+        Move the camera in a clockwise rotation.
+        The camera moves self.stop_ptz() is called.
+        :return: response json
+        """
+        return self._send_operation('Auto', speed=speed)