Add Sonarr method to get all tags

Will be part of /api/available API endpoint in #311

modules/SonarrInterface.py

@@ -77,7 +77,7 @@ def __init__(self, url: str, api_key: str, verify_ssl: bool=True,
 
         # Parse all Sonarr series
         self.__series_data = {}
-        self.__map_all_series_data()
+        # self.__map_all_series_data()
 
 
     def __repr__(self) -> str:
@@ -403,6 +403,18 @@ def set_episode_ids(self, series_info: SeriesInfo,
         self.get_all_episodes(series_info)
 
 
+    def get_all_tags(self) -> list[dict[str, 'str | int']]:
+        """
+        Get all tags present in Sonarr.
+
+        Returns:
+            List of tag dictionary objects with the keys "id" and
+            "label" for each tag.
+        """
+
+        return self._get(f'{self.url}tag', self.__standard_params)
+
+
     def list_all_series_id(self) -> None:
         """List all the series ID's of all shows used by Sonarr. """