remove pkg directory;

remove build directory;
remove githook directory;

core/bean/metadata.go

@@ -0,0 +1,28 @@
+// Copyright 2020
+//
+// 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 bean
+
+// BeanMetadata, in other words, bean's config.
+// it could be read from config file
+type BeanMetadata struct {
+	// Fields: field name => field metadata
+	Fields map[string]*FieldMetadata
+}
+
+// FieldMetadata contains metadata
+type FieldMetadata struct {
+	// default value in string format
+	DftValue string
+}