Add Form Validation

[alexfinnarn]

Of course, it's not good to just accept user input from forms and stick it in the database. I think this can be handled through libraries like yup and/or always sanitizing user input through a custom form submission handler pass thru.

Maybe Prisma already has something for sanitizing by default...

Acceptance Criteria

• [ ] Experiment and add some form validation library like yup
• [ ] Add validations to all current form elements
• [ ] Make sure to sanitize user input before inserting in db

[alexfinnarn]

basic form validations already included in Rails.