W26/angela/add pet form

[zeukyr]

Notion ticket link

Create Add Pet Form

Implementation description

• Created AddPetForm component by repurposing the existing EditPetForm
• Added QuitEditingModal component to warn users about unsaved changes when navigating away, which navigates back to pet list (home page) on "Leave" and closes on "Keep Editing"
• Added AddPetModal component to confirm adding a pet, which closes popup on "Cancel"

Steps to test

1. Navigate to /add-pet-form route
2. Verify clicking "Back to pet list" button causes a modal to appear -"Leave" should navigate to pet list page and "Keep Editing" should close the modal
3. Fill out page 1 fields without all requirements to verify that shows validation errors
4. Fill required fields and click "Next" - should navigate to page 2
5. Verify clicking "Save" causes a modal to appear, and "Cancel" closes it

What should reviewers focus on?

• QuitEditingModal behavior and form validation for required field are correct

Checklist

• My PR name is descriptive and in imperative tense
• My commit messages are descriptive and in imperative tense. My commits are atomic and trivial commits are squashed or fixup'd into non-trivial commits
• I have run the appropriate linter(s)
• I have requested a review from the PL, as well as other devs who have background knowledge on this PR or who will be building on top of this PR

[Akishai18]

Looks good overall. But fix AddPetForm to use pet default profile photo instead of user default