* Add http request volume table (#6765)

* init http metrics page

* remove flex-table-column

* add http requests table

* calculate percent change between each counter

* start percent change tests

* style request table

* show percent more/less glyph

* add percent more less tests

* add inline alert about recorded metrics

* make arrows diagonal

* remove conditional inside countersWithChange

* add better error msg

* use tagName and wrapping element a la glimmer components

* extend ClusterRouteBase so auth and seal checks happen

* make table accessible

* remove curlies

* add HttpRequestsTable to storybook

* make table accessible

* use qunit dom for better assertions

* remove EmptyState since we will never have 0 requests

* ensure counters is set in test context

* Http request volume/add barchart (#6814)

* Add http request volume table (#6765)

* init http metrics page

* remove flex-table-column

* ad...