feat: extract calendar component and refactor scheduling flow

[carissa-tang]

Brief description. What is this change?

Scheduling Flow: Extract calendar component

Implementation description. How did you make this change?

• Extracted calendar from input field
• Made form progressive (reveals one section at a time)
• Moved back/next buttons & disable feature added to "next"
• "End date" input field was changed to date picker
• Overall styling was tweaked to match Figma designs
• Note: Was unable to remove "," from Calendar and to only display two weeks -> limitation of the library used (sorry Stacy!)

Steps to test

1. Click through the form to see if each question is revealed one after the other
2. Ensure all buttons are clickable ("end date" field should only appear if not one time donation)
3. Cross-check both Desktop and Mobile view with Figma designs

Desktop View: https://user-images.githubusercontent.com/69697180/150065707-0ebb5bdc-8727-47d1-a2ab-bbcc6f5ffffa.mp4

• @hanlinc27 Inconsistency with radio buttons is apparent from 0:24-0:30

Mobile View: https://user-images.githubusercontent.com/69697180/150065486-d421a912-963d-42bb-a499-b04f58014fbb.mov

Update: Steps 2 and 3 are now refactored as well

Checklist

• My PR name is descriptive and in imperative tense
• My commit messages follow conventional commits and are descriptive. 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
• The appropriate tests if necessary have been written

[github-actions]

Visit the preview URL for this PR (updated for commit b7dd31a):

https://communityfridgekw-staging--pr94-carissa-refactor-sch-n2wxi48w.web.app

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[hanlinc27]

this is a really good first pr!!! @carissa-tang
first pass comments, will test it out locally tomorrow or friday! :)

[xsharonhe]

Just some general thoughts 😄 Except for that one bug, everything is working as intended so that's fantastic! Really nice work 😸

feel free to add to the discussion and agree / disagree with some things i said