cs: add «1752. Check if Array Is Sorted and Rotated»

URL:	https://leetcode.com/problems/check-if-array-is-sorted-and-rotated/
Signed-off-by: Matej Focko <me@mfocko.xyz>

cs/check-if-array-is-sorted-and-rotated.cs

@@ -0,0 +1,5 @@
+public class Solution {
+    public bool Check(int[] nums) => Enumerable
+        .Range(0, nums.Length)
+        .Count(i => nums[i] > nums[(i + 1) % nums.Length]) < 2;
+}