feat: add new encoder and restructure project

app/config.py

@@ -0,0 +1,16 @@
+from pydantic_settings import BaseSettings
+from typing import Literal
+
+class Settings(BaseSettings):
+    database_url: str
+    environment: Literal["dev", "stage", "prod"]
+    hashids_salt: str
+    encoder_alphabet: str
+
+    class Config:
+        env_file = ".env"
+        env_file_encoding = "utf-8"
+
+
+# Singleton instance of settings
+settings = Settings()