Adding Modal (UI component)

[Abhinavcode13]

Current Behavior

A modal window is a small box containing content or a message that requires you to interact with it before you can close it and return to your flow.

Think of the last time you deleted an item on your phone. The little message that popped up asking you to confirm that you wanted to remove it is a modal.

Desired Behavior

Will add this feature so it can help others too while accessing this repo.

Screenshots / Mockups

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[Abhinavcode13]

Please assign me this issue asap @thekavikumar !! under gssoc 23