#31 API basic implementation

* adds new app to project
* adds relation between User model and new APIUserToken model
* adds first implementation for GET of intervention
* adds basic code layout for future extension by having new versions

konova/utils/generators.py

@@ -13,6 +13,19 @@ import qrcode.image.svg
 from io import BytesIO
 
 
+def generate_token() -> str:
+    """ Shortcut for default generating of e.g. API token
+
+    Returns:
+        token (str)
+    """
+    return generate_random_string(
+        length=64,
+        use_numbers=True,
+        use_letters_lc=True
+    )
+
+
 def generate_random_string(length: int, use_numbers: bool = False, use_letters_lc: bool = False, use_letters_uc: bool = False) -> str:
     """
     Generates a random string of variable length