Align Filter Forms with React Hook Form

[ColinBuyck]

The landing page form and listings filter form do not utilize react hook forms and therefore, don't leverage much of our built-in validation. It will be very helpful to align these with with our typical form approach so that future improvements and validation is easier.

Currently, there is a form object being set onChange but ideally, these would use register, setValue, getValues rather than custom functions.

[sarahlazarich]

closing - moved over to new repo