This PR refactors how we add the orgId to the context on a public dashboard paths. We also split out accessToken handling into its own package and rework status code for "RequiresValidAccessToken". We will be modeling all endpoints to use these status codes going forward. Additionally, it includes a scaffold for better middleware testing and refactors existing tests to table drive tests.
This PR moves public dashboards into its own self contained service including API, Service, Database, and Models. Routes are mounted on the Grafana HTTPServer by the API service at injection time with wire.go. The main route that loads the frontend for public dashboards is still handled by the API package.
Co-authored-by: Jesse Weaver <jesse.weaver@grafana.com>
Co-authored-by: Owen Smallwood <owen.smallwood@grafana.com>
