Feature/ai service/improve pipelines (#159)

* fix command

* pretty print original mdl json

* reformat sample dataset

* add macro example

* update demo dataset according to latest release

* add quotes to sql, update dep and eval sample data

* fix quoted sql

* improve ask details sqk breakdown

* remove description

* remove data example in ecommerce sample data

* use released version demo dataset

wren-ai-service/demo/Makefile

@@ -7,7 +7,7 @@ stop:
 	cd ..; make stop-qdrant
 
 ui:
-	cd ../../wren-ui; export DB_TYPE=sqlite export SQLITE_FILE=db.sqlite3 yarn install && yarn rollback --all && yarn migrate && yarn dev
+	cd ../../wren-ui; export DB_TYPE=sqlite export SQLITE_FILE=db.sqlite3 && yarn install && yarn rollback --all && yarn migrate && yarn dev
 
 ai:
 	cd ..; make start