chore: add dbt test and fixtures #5740

Job	Run time
Build	3m 44s
Node.js Binding Tests	4m 38s
Lint (clippy)	4m 33s
Format (rustfmt +nightly)	16s
Python Binding Tests	6m 48s
Unit Tests	6m 13s
SQL Logic Tests (postgres)	17s
PG Protocol Tests	31s
Cache Maintenance	0s
SQL Logic Tests (flightsql)	17s
SQL Logic Tests (rpc)	12s
Process Integration Tests (pytest)	46s
MinIO Integration Tests (SLT::MinIO)	2m 49s
Datasource Integration (Clickhouse)	2m 29s
Service Integration Tests (SLT)	4m 44s
Datasource Integration (Cassandra)	1m 51s
Datasource Integration (Mysql)	2m 48s
Datasource Integration (MongoDB)	35s
Datasource Integration (Sqlserver)	9m 14s
Snowflake Integration Tests (SLT::Snowflake)	2m 19s
	55m 4s

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