Feat-Mutation for forgot password option #95

[MuntazirHaider]

I did the following changes to implement the forgot password feature -:
1. Schema
a. requestPasswordReset - take email and give message, success, and encrypted otp in response.
b. verifyPasswordResetOtp - take otp from user and give message and success in response.
c. resetPassword - take email and new password and give message, success in response.
2.Resolver
a. requestPasswordReset - send otp to email and give encrypted otp
b. verifyPasswordResetOtp - compare given otp and encrypted otp and verify user
c. resetPassword - update the user password

To use this feature, some things to do in frontend -:
1. Store the email and encrypted otp in local storage for limited time (e.g - 2min)
2. Extract otp from local storage and set it in header using apollo client here's how you can do this
In index.js file add this code

const client = new ApolloClient({
  uri: '<enter url here>',
  cache: new InMemoryCache(),
  headers: {
    otp: localStorage.getItem("otp") || ""
  }
});

3. Extract email from local storage and take new password from user and give it to resetPassword

I use nodemailer and otp-generator npm packages.
User dont need to be Authorized in order to forgot his password.