chore: rename database file from askedout.db to lovelope.db

Leftover naming from before the app was renamed to lovelope. Renamed
the local data/askedout.db file to data/lovelope.db to match (data/
is gitignored, so this doesn't touch version control).

docker-compose.yml

@@ -6,7 +6,7 @@ services:
     ports:
       - "3000:3000"
     environment:
-      DATABASE_URL: "file:/app/data/askedout.db"
+      DATABASE_URL: "file:/app/data/lovelope.db"
       APP_URL: "http://localhost:3000"
       NODE_ENV: "development"
       GIPHY_API_KEY: "${GIPHY_API_KEY:-}"