fix(dev): dotenv issues when getting setup with the repo (#2612)

- The .env.example was missing required Clickhouse values.
- A symlink was needed for .env from the root to the apps/webapp folder

.env.example

@@ -13,6 +13,11 @@ APP_ORIGIN=http://localhost:3030
 ELECTRIC_ORIGIN=http://localhost:3060
 NODE_ENV=development
 
+# Clickhouse
+CLICKHOUSE_URL=http://default:password@localhost:8123
+RUN_REPLICATION_CLICKHOUSE_URL=http://default:password@localhost:8123
+RUN_REPLICATION_ENABLED=1
+
 # Set this to UTC because Node.js uses the system timezone
 TZ="UTC"