Translate all code to English (#1836)

* Review the EN heading format.

* Fix pythontutor headings.

* Fix pythontutor headings.

* bug fixes

* Fix headings in **/summary.md

* Revisit the CN-to-EN translation for Python code using Claude-4.5

* Revisit the CN-to-EN translation for Java code using Claude-4.5

* Revisit the CN-to-EN translation for Cpp code using Claude-4.5.

* Fix the dictionary.

* Fix cpp code translation for the multipart strings.

* Translate Go code to English.

* Update workflows to test EN code.

* Add EN translation for C.

* Add EN translation for CSharp.

* Add EN translation for Swift.

* Trigger the CI check.

* Revert.

* Update en/hash_map.md

* Add the EN version of Dart code.

* Add the EN version of Kotlin code.

* Add missing code files.

* Add the EN version of JavaScript code.

* Add the EN version of TypeScript code.

* Fix the workflows.

* Add the EN version of Ruby code.

* Add the EN version of Rust code.

* Update the CI check for the English version  code.

* Update Python CI check.

* Fix cmakelists for en/C code.

* Fix Ruby comments

en/codes/go/chapter_tree/binary_tree_test.go

@@ -0,0 +1,41 @@
+// File: binary_tree_test.go
+// Created Time: 2022-11-25
+// Author: Reanon (793584285@qq.com)
+
+package chapter_tree
+
+import (
+	"fmt"
+	"testing"
+
+	. "github.com/krahets/hello-algo/pkg"
+)
+
+func TestBinaryTree(t *testing.T) {
+	/* Initialize binary tree */
+	// Initialize nodes
+	n1 := NewTreeNode(1)
+	n2 := NewTreeNode(2)
+	n3 := NewTreeNode(3)
+	n4 := NewTreeNode(4)
+	n5 := NewTreeNode(5)
+	// Build references (pointers) between nodes
+	n1.Left = n2
+	n1.Right = n3
+	n2.Left = n4
+	n2.Right = n5
+	fmt.Println("Initialize binary tree")
+	PrintTree(n1)
+
+	/* Insert node P between n1 -> n2 */
+	// Insert node
+	p := NewTreeNode(0)
+	n1.Left = p
+	p.Left = n2
+	fmt.Println("After inserting node P")
+	PrintTree(n1)
+	// Remove node
+	n1.Left = n2
+	fmt.Println("After removing node P")
+	PrintTree(n1)
+}