The goal of this problem is to write a program similar to the one shown in the following screenshot:

To build this program, create the following four extension methods:

• StringToBytes: Converts a string into an array of bytes holding the string's Unicode data
• BytesToString: Converts a byte array holding Unicode data into a string
• BytesToHex: Converts a byte array into a hexadecimal string representing the bytes
• HexToBytes: Converts a hexadecimal string into a byte array

When the user clicks the button on the left, convert the entered text into a byte array and then display its hexadecimal representation. When the user clicks the button on the right, convert the hexadecimal string into a byte array and then convert that array back into the original string.