Add format for PR and contribution guide?

[bhaumikmistry]

We should add a format for PR description to keep the PR in same format easy to read, and some more detailed contribution guide and Welcome bot for betterment and encouragement?

Please advice. @AnupKumarPanwar

Once you advice please assign it back to me.

-Thanks.

[sumitkp18]

Can I contribute to this project?

[Kunal614]

can i contribute?

[Kunal614]

can i contribute?
Updated at readme https://github.com/Kunal614/C-Plus-Plus/commit/1dce03efd9fdd8f925ab77ad8f5a55cc518c390a

[bhaumikmistry]

Please take a look at the README of python for better understanding of what we want.

[AnupKumarPanwar]

We can create an issue template and PR template rather than adding the complete format in contribution guidelines.