Create Oauth button for Investor using Facebook and Google

- this will allow investor to have an option to register using Facebook or Google if they don't want to fill in the form this potion will need back-end route for Investor
-Pages to edit are Investor Registration

Start with the Investor Registration page named in the issue and identify how its current registration flow works. Clarify the required backend route and the Facebook and Google OAuth behavior before implementing. Done means investors can choose either provider instead of filling in the registration form.

Written by the indexing model from the issue text.