Add ru version (#1865)

* Add Russian docs site baseline

* Add Russian localized codebase

* Polish Russian code wording

* Update ru code translation.

* Update code translation and chapter covers.

* Fix pythontutor extraction.

* Add README and landing page.

* placeholder of profiles

* Use figures of English version

* Remove chapter paperbook

ru/codes/go/chapter_dynamic_programming/climbing_stairs_dfs.go

@@ -0,0 +1,21 @@
+// File: climbing_stairs_dfs.go
+// Created Time: 2023-07-18
+// Author: Reanon (793584285@qq.com)
+
+package chapter_dynamic_programming
+
+/* Поиск */
+func dfs(i int) int {
+	// dp[1] и dp[2] уже известны, вернуть их
+	if i == 1 || i == 2 {
+		return i
+	}
+	// dp[i] = dp[i-1] + dp[i-2]
+	count := dfs(i-1) + dfs(i-2)
+	return count
+}
+
+/* Подъем по лестнице: поиск */
+func climbingStairsDFS(n int) int {
+	return dfs(n)
+}