Janelle frontend components

[little-jan]

Change Summary

[Briefly summarise the changes that you made. Just high-level stuff]

• added .tsx files for each page that our webapp is planned to have
• each file only has placeholder typescript code
  export default function Default() {
  return

  hello, welcome to the _ page

  ;
  }

Change Form

Fill this up (NA if not available). If a certain criteria is not met, can you please give a reason.

• The pull request title has an issue number
• The change works by "Smoke testing" or quick testing
• The change has tests
• The change has documentation

Other Information

[Is there anything in particular in the review that I should be aware of?]