Add a way to validate CP solutions

[gopalgoel19]

Figure out if these platfoms provide apis to validate solutions. If they do, build a CI/CD pipeline to run build on every PR.

[Suvid-Singhal]

Hi,
This seems to be interesting to me. Codeforces does have an API. I think we can together solve this. What do you think @gopalgoel19

[gopalgoel19]

@Suvid-Singhal awesome. Give it a go man.