feat(go): support basic pkg

codes/go/chapter_tree/binary_tree.go

@@ -0,0 +1,23 @@
+// File: binary_tree.go
+// Created Time: 2022-11-25
+// Author: Reanon (793584285@qq.com)
+
+package chapter_tree
+
+import (
+	. "github.com/krahets/hello-algo/pkg"
+)
+
+type BinaryTree struct {
+	root *TreeNode
+}
+
+func NewBinaryTree(node *TreeNode) *BinaryTree {
+	return &BinaryTree{
+		root: node,
+	}
+}
+
+func (tree *BinaryTree) Print() {
+	PrintTree(tree.root)
+}