Add solution for Challenge 2 (#847)

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

Author: cckwes

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

@@ -0,0 +1,34 @@
+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 {
+    runes := []rune(s)
+    stringLength := len(runes)
+    result := make([]rune, stringLength)
+    
+    for i := 0; i < stringLength; i++ {
+        result[stringLength - 1 - i] = runes[i]
+    }
+    
+	return string(result)
+}