API Call to Add Resident

[jyan36]

Notion ticket link

Participant Page - Adding Residents

Implementation description

• Called GraphQL mutation to add resident using constant in APICalls
• Adds inputted data except for some fields (such as birth date)
• Added error message

Steps to test

1. Click Add Resident and input all necessary fields
2. Click Add Resident and the page should reload with the new resident added

What should reviewers focus on?

• Inspect element and there shouldn't be any errors in the Console

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