Add authorization

env.py

@@ -0,0 +1,28 @@
+import os
+from dotenv import dotenv_values, load_dotenv
+
+
+class Env:
+    env: dict[str, str | None] = {
+        **dotenv_values(".env.example"),
+        **dotenv_values(".env")
+    }
+
+    @staticmethod
+    def load_environment(path: str):
+        load_dotenv(path)
+        Env.env = {**Env.env, **os.environ}
+
+    @staticmethod
+    def get(key: str):
+        return Env.env.get(key)
+
+    @staticmethod
+    def get_strict[T](key: str, type_: type[T]) -> T:
+        env_var = Env.env.get(key)
+        if (env_var is None):
+            raise ValueError(f"Environment variable {key} not found")
+        try:
+            return type_(env_var)
+        except:
+            raise ValueError("Environment variable IMAGE_TARGET_SIZE is wrong")