Add Ruby code blocks to the documents (#1200)

* Add Ruby code blocks to documents

* Remove Ruby code from en/docs

docs/chapter_stack_and_queue/deque.md

@@ -352,6 +352,12 @@
     val isEmpty = deque.isEmpty()
     ```
 
+=== "Ruby"
+
+    ```ruby title="deque.rb"
+
+    ```
+
 === "Zig"
 
     ```zig title="deque.zig"

docs/chapter_stack_and_queue/queue.md

@@ -328,6 +328,12 @@
     val isEmpty = queue.isEmpty()
     ```
 
+=== "Ruby"
+
+    ```ruby title="queue.rb"
+
+    ```
+
 === "Zig"
 
     ```zig title="queue.zig"

docs/chapter_stack_and_queue/stack.md

@@ -322,6 +322,12 @@
     val isEmpty = stack.isEmpty()
     ```
 
+=== "Ruby"
+
+    ```ruby title="stack.rb"
+
+    ```
+
 === "Zig"
 
     ```zig title="stack.zig"