feat: Add solution for LeetCode problem 105

Author: WhiteHyun

combination-sum/WhiteHyun.swift

@@ -0,0 +1,13 @@
+//  
+//  39. Combination Sum
+//  https://leetcode.com/problems/combination-sum/description/
+//  Dale-Study
+//  
+//  Created by WhiteHyun on 2024/06/27.
+//  
+
+class Solution {
+    func combinationSum(_ candidates: [Int], _ target: Int) -> [[Int]] {
+        
+    }
+}