refactor(imports): adds lazy imports for react components

[aidanprior]

Linked issue/ticket

Description

Converts to lazy import for most components. React Router has it's own lazy features that haven't yet been implemented, so the pages are not lazily imported, but all sub components are.

Reproduction steps

Checklist

• [x] I've followed the Contributing guidelines
• [x] I've titled my PR according to the Conventional Commits spec
• [ ] I've added tests that fail without this PR but pass with it
• [x] I've linted, tested, and commented my code
• [ ] I've updated documentation (if appropriate)