[FEA]Expose max nesting depth in hash function to plugin

[ustcfy]

Is your feature request related to a problem? Please describe.

As suggested in NVIDIA/spark-rapids#11660 (comment), enabling nested types hash computation in the plugin requires exposing the maximum nesting depth.

Describe the solution you'd like

1. Move the definition of the maximum nesting depth to hash.hpp for use by different hash functions.
2. Expose the value of the maximum nesting depth to the plugin.