backend: make the data directory and the artifacts from the frontend customizable using environment variables

Signed-off-by: lucasew <lucas59356@gmail.com>

backend/apps/web/internal/db.py

@@ -1,4 +1,6 @@
 from peewee import *
+from config import DATA_DIR
 
-DB = SqliteDatabase("./data/ollama.db")
+
+DB = SqliteDatabase(str(DATA_DIR / "ollama.db"))
 DB.connect()