Support data sources providing a converter matcher #156
Description
Column types for a SQL table can be more complex than primitives. There could be various permutations of a data type due to it being generic. For example: ClickHouse supports many data types that can be created with other type parameters. This can lead to the root data type not being representative of the actual data and it is inefficient to explicitly write out every permutation.
To that end, instead we should support data sources providing a custom matcher that will handle nested types.
See grafana/support-escalations#14655