Refactor DataSqrlRun & DataSqrlTest

[mbroecheler]

These two classes have a lot of code duplication with the planner and many hard-coded configuration values which is a maintenance hazard.
DataSqrlRun copies the entire FlinkSQL and compiled plan execution logic from the flink-sql-runner project. We want to figure out a way to reuse flink-sql-runner here because that reduced duplication and makes sure we execute flink-sql-runner which increases its test coverage.

Proposal:
Have the module contianing those two classes depend on the planner and runner. Then we can reuse the configuration system and flink-sql-runner for execution. It also means we can create a single jar file which greatly reduces the size of the docker image.