added email reset functionality

[AyushSharma72]

added an modal on the frontend and an api on the backend which lets user use the functionality of forgot password

when the user fills email on the modal and press submit

image2:

an email is sent with the url of forgot password page by which user can visit the page and reset the password

advantage:
only the authenticated user will be able to reset the password as the email will go only to that user

email will go like this:

please add gssoc-ext and level3 label before merge

[AyushSharma72]

dont forget to add level3 and gssoc-ext label @Anuj3553
tell me if any issue

[Anuj3553]

Well done @AyushSharma72

[AyushSharma72]

Well done @AyushSharma72

thanks