Add Search Input to UI

[dhochbaum-dcp]

Summary

This will be the first of several issues to add address and radius filtering to CPP. The scope of this Issue will implement the feature in an incomplete state but will hide the changes behind a feature flag

Acceptance criteria

• Add new input to header bar using existing Combobox component in Streetscape according to designs
• Sample data should be hardcoded as is done in Streetscape
  • The sample data should match the first 5 responses for a search for 123 in Geosearch
  • Coordinate data should be included so that the map pin issue can be worked on independently after
• All changes should be behind existing Facdb phase 1 feature flag

Out of scope

• Connecting the input to the Geosearch API and adding the pin to the map are separate issues
• The "Filter by Radius" button and popover are out of scope and will added following completion of this Issue.