lib/ur: Normalise contract between syncthing and ursrv (#6770)

* Fix ui, hide report date

* Undo Goland madness

* UR now web scale

* Fix migration

* Fix marshaling, force tick on start

* Fix tests

* Darwin build

* Split "all" build target, add package name as a tag

* Remove pq and sql dep from syncthing, split build targets

* Empty line

* Revert "Empty line"

This reverts commit f74af2b067.

* Revert "Remove pq and sql dep from syncthing, split build targets"

This reverts commit 8fc295ad00.

* Revert "Split "all" build target, add package name as a tag"

This reverts commit f4dc889951.

* Normalise contract types

* Fix build add more logging

lib/api/mocked_model_test.go

@@ -15,6 +15,7 @@ import (
 	"github.com/syncthing/syncthing/lib/model"
 	"github.com/syncthing/syncthing/lib/protocol"
 	"github.com/syncthing/syncthing/lib/stats"
+	"github.com/syncthing/syncthing/lib/ur/contract"
 	"github.com/syncthing/syncthing/lib/versioner"
 )
 
@@ -112,8 +113,7 @@ func (m *mockedModel) State(folder string) (string, time.Time, error) {
 	return "", time.Time{}, nil
 }
 
-func (m *mockedModel) UsageReportingStats(version int, preview bool) map[string]interface{} {
-	return nil
+func (m *mockedModel) UsageReportingStats(r *contract.Report, version int, preview bool) {
 }
 
 func (m *mockedModel) FolderErrors(folder string) ([]model.FileError, error) {