[Frontend] Add initial reports page with button to begin report

[lfrohlich]

Description:

Add button(s) to start a new report for a specific quarter and year to the page (update based on #427).

AC:

• Header that says "TANF Reports"
• Select component with available years
• Button is added to the page
• Clicking on Button opens a new page to upload files
• Frontend matches [Design] As a test user, I want to see dev-ready mockups to upload each section of a TANF report #427 delivered and accepted mockup
• All tests are passing
• Test coverage exceeds 90%

Tasks:

• Add Button element that has Begin Report as text
• Add Select USWDS component to allow user to select year for report.
• Add label for Select that says "Fiscal Year (October - September)"
• Create new route for new reports (/reports/upload)
• Reroute user to new route on click of Begin Report button
• Add new navigation tab to main nav

Supporting Documentation:

• [Design] As a test user, I want to see dev-ready mockups to upload each section of a TANF report #427

Open Questions:

• Does 2020 TANF Reports change depending on the year chosen?
• How does choosing the year relate to what is uploaded? Do we need to send what year was chosen to the backend?

[lfrohlich]

This was merged 12/18