Added isisCNET creation

Final working notebook.

Finished notebooks based on what was here.

Added transformations to the notebook

* Added to ipf from dataframe. Also updated both gpf and ipf writer tests

* Added test output file.

* Added asserts to gpf and ipf tests

* Reverted save_gpf testing to numpy array almost equals

Small change to update file column in dataframe.

Ipf Reader

Added bin and notebooks directories, also added Socetnet2ISIS script

* Makes gdal an optional dependency

* Refactors all bae I/O into a single namespace.

* typos

* Fixes the gdal dependency test

* Adds tests for the JSON

* Tests fail without test data

* Updates for comments from @thareUSGS

* Adds ISIS3 V2 ControlNetwork Reader

* Adds hcube mixin object

* Updates to support tif M3, and fixes indexing issues