FIXED: Caesar cipher decoder

[OfficialAhmed]

• [FIXED ISSUE] Using elif instead of if and nested else-if #1910
• [ENHANCED SECURITY] The key is no longer limited to 25 can be any number, hence, brute forcing takes longer to decrypt
  • The correct decoded cipher text is returned. No longer returns the possible solutions like before.
    • Encode The key is added to the ciphered text
    • Decode The key is removed from the ciphered text
• [ENHANCED ERROR HANDLING] Wrong input no longer terminates the script. It'll rerun for the correct input

[NitkarshChourasia]

Perfect!