feat: add swift implementation to lcci problem: No.05.01 (doocs#2665)

Author: klever34

Diff for: lcci/05.01.Insert Into Bits/README.md

@@ -81,6 +81,20 @@ function insertBits(N: number, M: number, i: number, j: number): number {
 }
 ```
 
+```swift
+class Solution {
+    func insertBits(_ N: Int, _ M: Int, _ i: Int, _ j: Int) -> Int {
+        var result = N
+
+        for k in i...j {
+            result &= ~(1 << k)
+        }
+
+        return result | (M << i)
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->

Diff for: lcci/05.01.Insert Into Bits/README_EN.md

@@ -81,6 +81,20 @@ function insertBits(N: number, M: number, i: number, j: number): number {
 }
 ```
 
+```swift
+class Solution {
+    func insertBits(_ N: Int, _ M: Int, _ i: Int, _ j: Int) -> Int {
+        var result = N
+
+        for k in i...j {
+            result &= ~(1 << k)
+        }
+
+        return result | (M << i)
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->

Diff for: lcci/05.01.Insert Into Bits/Solution.swift

@@ -0,0 +1,11 @@
+class Solution {
+    func insertBits(_ N: Int, _ M: Int, _ i: Int, _ j: Int) -> Int {
+        var result = N
+
+        for k in i...j {
+            result &= ~(1 << k)
+        }
+
+        return result | (M << i)
+    }
+}