feat(components): enhance Modal and migrate to TypeScript

[connor-baer]

Supercedes #415, #483.

Approach and changes

• migrate Modal and subcomponents to TypeScript
• add useModal hook
• make ModalFooter sticky on mobile for when the content exceeds the modal height

Definition of done

• Development completed
• Reviewers assigned
• Unit and integration tests
• Meets minimum browser support
• Meets accessibility requirements

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[codecov]

Codecov Report

Merging #610 into beta will decrease coverage by 0.06%.
The diff coverage is 93.75%.

@@            Coverage Diff             @@
##             beta     #610      +/-   ##
==========================================
- Coverage   93.93%   93.87%   -0.07%     
==========================================
  Files         133      134       +1     
  Lines        2144     2154      +10     
  Branches      639      640       +1     
==========================================
+ Hits         2014     2022       +8     
- Misses        106      108       +2     
  Partials       24       24              

Impacted Files	Coverage Δ
src/components/Button/Button.tsx	100.00% <ø> (ø)
src/util/type-check.ts	83.33% <80.00%> (ø)
src/components/Modal/Modal.tsx	93.10% <93.10%> (ø)
src/components/Modal/ModalContext.tsx	93.33% <93.33%> (ø)
src/components/Card/components/Footer/Footer.js	100.00% <100.00%> (ø)
...nents/Modal/components/ModalFooter/ModalFooter.tsx	100.00% <100.00%> (ø)
...nents/Modal/components/ModalHeader/ModalHeader.tsx	100.00% <100.00%> (ø)
...nts/Modal/components/ModalWrapper/ModalWrapper.tsx	100.00% <100.00%> (ø)
... and 1 more

[github-actions]

🎉 This PR is included in version 2.0.0-beta.5 🎉

The release is available on:

• npm package (@beta dist-tag)
• GitHub release

Your semantic-release bot 📦🚀

[github-actions]

🎉 This PR is included in version 2.0.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀