User should be able to sign up to use the web app

[agneym]

Sign up collects following details from the user:

• Name
• Phone number
• Date of Birth of the user

Authentication enforces uniqueness of phone number + date of birth on the backend.

Ref: #1

Returns a token (cookie or otherwise) stored locally on the device.

[midhunkrishna]

@agneym Picking this up.

[ittyjose]

Please find the PR for this issue link: #17
It includes the basic design for the signup and OTP pages

@midhunkrishna @agneym

[agneym]

@midhunkrishna Do check if you are able to use UI from the same.