[FEA] add `intensity_median` support to `regionprops_table`

[grlee77]

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

scikit-image 0.26 added the "intensity_median" property. It can be computed inefficiently on a per-region basis after #1038 via RegionProps, but proper regionprops_table support should also be added.

Describe the solution you'd like
The implementation should follow the approach taken for batch computation of other intensity-based measures. These launch a single GPU kernel that compute the intensity based metrics for all regions in a single pass. These batch GPU kernels should be updated for this metric.

Describe alternatives you've considered
The current workaround is to call regionprops_table with batch_processing=False. This is not optimal from a performance standpoint as this launches a separate CUDA kernel for each individual region. This is typically inefficient unless the individual regions are very large.

Additional context