[skip-ci] initial support for stream installs, add ftp installs.

do NOT build or release binaries of this version, it is not complete and there will be dragons.

sphaira/include/yati/container/nsp.hpp

@@ -8,7 +8,6 @@ namespace sphaira::yati::container {
 struct Nsp final : Base {
     using Base::Base;
     Result GetCollections(Collections& out) override;
-    static Result Validate(source::Base* source);
 };
 
 } // namespace sphaira::yati::container