SDHI - Service Module System

Creates .netkan files for SDHI - Service Module System and Animated Decouplers. Can @sumghai review this before this is merged please.
Does SDHI need to be installed to a subdirectory https://github.com/KSP-CKAN/CKAN/issues/376 style to avoid conflicts with the SDHI\Agencies directory? It currently installs as described in the forum post.
Does AnimatedDecouplers need to be split into a 'regular' and 'x64' .netkan with separate identifiers?
I can spin up a Node Resizer .ckan if desired as it is not using the [Github releases](https://github.com/Starwaster/NodeResizer/releases) system.