Merge topic 'FindJasper-imported-target'

6e8754c625 FindJasper: Add IMPORTED target
bdbce845cd FindJasper: Add JASPER_INCLUDE_DIRS result variable
7f8413c309 FindJasper: Modernize documentation layout
524205a7a5 FindJasper: Modernize code layout

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !4633