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/zig/utils/ListNode.zig

@@ -0,0 +1,49 @@
+// File: ListNode.zig
+// Created Time: 2023-01-07
+// Author: codingonion (coderonion@gmail.com), CreatorMetaSky (creator_meta_sky@163.com)
+
+const std = @import("std");
+
+// Узел связного списка
+pub fn ListNode(comptime T: type) type {
+    return struct {
+        const Self = @This();
+
+        val: T = 0,
+        next: ?*Self = null,
+
+        // Initialize a list node with specific value
+        pub fn init(self: *Self, x: i32) void {
+            self.val = x;
+            self.next = null;
+        }
+    };
+}
+
+// Десериализовать список в связный список
+pub fn listToLinkedList(comptime T: type, allocator: std.mem.Allocator, list: std.ArrayList(T)) !?*ListNode(T) {
+    var dum = try allocator.create(ListNode(T));
+    dum.init(0);
+    var head = dum;
+    for (list.items) |val| {
+        var tmp = try allocator.create(ListNode(T));
+        tmp.init(val);
+        head.next = tmp;
+        head = head.next.?;
+    }
+    return dum.next;
+}
+
+// Десериализовать массив в связный список
+pub fn arrToLinkedList(comptime T: type, mem_allocator: std.mem.Allocator, arr: []T) !?*ListNode(T) {
+    var dum = try mem_allocator.create(ListNode(T));
+    dum.init(0);
+    var head = dum;
+    for (arr) |val| {
+        var tmp = try mem_allocator.create(ListNode(T));
+        tmp.init(val);
+        head.next = tmp;
+        head = head.next.?;
+    }
+    return dum.next;
+}