refactor registry to include OS version filtering on the package index (#64)

* refactor registry to include OS version filtering on the package index

* remove commented code, clean up tests

* removed unused types

* remove disabled test

* remove unused type

* fix query parsing

* remove unused code

* more purging

* MOAR PURGING

* normalize data model, fix all type errors

* rename get parameter

package.yaml

@@ -32,6 +32,7 @@ dependencies:
   - filepath
   - foreign-store
   - fsnotify
+  - http-api-data
   - http-types
   - interpolate
   - lens