feat: added submitFormResponse mutation

[piyushgarg-dev]

Reference #17

What does this PR do?

Fixes #1

1. Added submitFormResponse Mutation. This allows to submit responses of a form created by a user.
2. Added getFormResponsesByFormId Query. This allows to query form responses based on form Id.
3. Created a database model named: FormResponse

Type of change

• New feature (non-breaking change which adds functionality)

How should this be tested?

• You can test this at http://localhost:8000/local/graphql -> mutation -> SubmitFormResponse
• I have made sure that db model FormResponse keep those fields optional which are optional during creating a Form.
  • Only required fields are:

    form   Form   @relation(fields: [formId], references: [id])
    formId String @map("form_id")
    userName    String   @map("user_name")
    testimonial String   @map("testimonial")
    

All the necessary changes required for the above changes are done at their respective places.
No unnecessary change has been done.

[github-actions]

Thank you for following the naming conventions! 🙏