export some types directly

Per #14 this PR hides some modules and exports their types directly.

Hides modules components, plugin, and prototype.
Exports types ProtoComponent, ProtoPlugin, Prototype, and Prototypical directly, and in the prelude.
Exports the deserialize_templates_list function directly, but not the in the prelude.
Bumps the version number for the possible breaking change.

MrGVSV / bevy_proto