Moved internal/ to pkg/ to make building external plugins possible

internal/generator/plugins/hostfile/hostfile_test.go

@@ -1 +0,0 @@
-package main

internal/schema.go

@@ -1,2 +0,0 @@
-// TODO: implement a way to fetch schemas from node orchestrator
-package configurator

pkg/server/server.go

@@ -108,6 +108,10 @@ func (s *Server) Serve() error {
 	return s.ListenAndServe()
 }
 
+func (s *Server) Close() {
+
+}
+
 // This is the corresponding service function to generate templated files, that
 // works similarly to the CLI variant. This function takes similiar arguments as
 // query parameters that are included in the HTTP request URL.