Add solution for Challenge 2 (#729)

Co-authored-by: go-interview-practice-bot[bot] <230190823+go-interview-practice-bot[bot]@users.noreply.github.com>

Author: kiramux

challenge-2/submissions/kiramux/solution-template.go

@@ -0,0 +1,37 @@
+package main
+
+import (
+"bufio"
+"fmt"
+"os"
+)
+
+func main() {
+// Read input from standard input
+scanner := bufio.NewScanner(os.Stdin)
+if scanner.Scan() {
+input := scanner.Text()
+
+// Call the ReverseString function
+output := ReverseString(input)
+
+// Print the result
+fmt.Println(output)
+}
+}
+
+// ReverseString returns the reversed string of s.
+func ReverseString(s string) string {
+if len(s) == 0 {
+return ""
+}
+str := []byte(s)
+left := 0
+right := len(str) - 1
+for left < right {
+str[left], str[right] = str[right], str[left]
+left++
+right--
+}
+return string(str)
+}