Move features from the implementations repo to the driver

[szarnyasg]

I think a lot of classes (QueryStore, BaseDb) would fit better into the driver codebase.

common/src/main/java/com/ldbc/impls/workloads/ldbc/snb/BaseDbConnectionState.java
common/src/main/java/com/ldbc/impls/workloads/ldbc/snb/SnbTest.java
common/src/main/java/com/ldbc/impls/workloads/ldbc/snb/db/BaseDb.java
common/src/main/java/com/ldbc/impls/workloads/ldbc/snb/QueryStore.java