Move packages to proejct/pkg to follow go project folder structure convention (#1190)

pkg/fission-cli/plugin/registry.go

@@ -0,0 +1,29 @@
+/*
+Copyright 2016 The Fission Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package plugin
+
+// builtinRegistry consists of a map of plugin names along with the relevant url.
+var builtinRegistry = map[string]string{
+	"workflows": "https://github.com/fission/fission-workflows/releases",
+}
+
+// SearchRegistries will search (remote) registries for the presence of the command.
+// For now we only use the builtinRegistry
+func SearchRegistries(cmd string) (string, bool) {
+	url, ok := builtinRegistry[cmd]
+	return url, ok
+}