doc: fix license documentation

fix: source code and imports

fix: updated source code and imports

add our choice for license

Merge branch 'main' of https://github.com/bobbyryan215/phreng

add comments for review & advice

Update DESCRIPTION

Delete tests/tinytests.R

Update ex_point_cloud_dist.R

fix: improve code readability and align with other S7 packages

add point cloud array object examples

add point cloud dist object examples

fix file name

add raster examples

feat: implemented tests for point cloud and raster