Intake conversion Spatial_selection (#379)

* converting from cc to intake

* Fixes to make this run

* tidy

* minor beautifications

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Co-authored-by: max <u5190335@anu.edu.au>
Co-authored-by: anton-climate <anton.steketee@anu.edu.au>
Co-authored-by: Navid C. Constantinou <navidcy@users.noreply.github.com>