prepare settings for json based user database

apiserver/__init__.py

-from .main import app
\ No newline at end of file
+from .main import app, settings
\ No newline at end of file

apiserver/config.env

@@ -2,3 +2,4 @@
 # DATACATALOG_APISERVER_HOST="0.0.0.0",
 # DATACATALOG_APISERVER_PORT=80
 DATACATALOG_APISERVER_JSON_STORAGE_PATH="./app/data"
+DATACATALOG_APISERVER_USERDB_PATH="./app/userdb.json"

apiserver/config/settings.py

@@ -7,6 +7,7 @@ DEFAULT_JSON_FILEPATH: str = "./app/data"
 
 class ApiserverSettings(BaseSettings):
     json_storage_path: str = DEFAULT_JSON_FILEPATH
+    userdb_path: str = None
 
     class Config:
         env_prefix: str = "datacatalog_apiserver_"