[Feature]: Changes in Add function

[shobhit15082003]

So, what is it about?

1)Update the Add function such that it takes address of the candidate to whom the user wants to vote for.
2) Modifier : Set a modifier which makes sure that the vote only goes to 4 candidates who are contesting.
3)Add another argument in the Add function which asks the user to enter their vote and make sure they are 18+ to vote.

Code of Conduct

• I agree to follow this project's Code of Conduct

[SahilMorwal]

can you assign me this issue

[MishraSomesh001]

Assigned

You have to submit a pr before 12 noon of tomorrow. (i.e 26.03.24)

Happy Holi 🎉