Request for availableMeasures, availableDimensions to be customizable of QueryBuilder in @cubejs-client/react

**Is your feature request related to a problem? Please describe.**
As I import more and more schemas, there are more availableMeasures and availableDimensions get populated in, the selection list in QueryBuilder gets very long, it's difficult to find a measure or dimension

**Describe the solution you'd like**
add new props e.g. availableSchemas to be array type, accepts expected schema, then all these schemas's measures and dimensions, segments will be set with availableSchemas's measures, dimensions and segments

**Describe alternatives you've considered**

**Additional context**
Add any other context or screenshots about the feature request here.