Add build script for Swift.

docs/chapter_sorting/insertion_sort.md

@@ -119,20 +119,7 @@ comments: true
 === "Swift"
 
     ```swift title="insertion_sort.swift"
-    /* 插入排序 */
-    func insertionSort(nums: inout [Int]) {
-        // 外循环：base = nums[1], nums[2], ..., nums[n-1]
-        for i in stride(from: 1, to: nums.count, by: 1) {
-            let base = nums[i]
-            var j = i - 1
-            // 内循环：将 base 插入到左边的正确位置
-            while j >= 0, nums[j] > base {
-                nums[j + 1] = nums[j] // 1. 将 nums[j] 向右移动一位
-                j -= 1
-            }
-            nums[j + 1] = base // 2. 将 base 赋值到正确位置
-        }
-    }
+    [class]{}-[func]{insertionSort}
     ```
 
 === "Zig"