add isPublic to dashboard (#48012)

adds toggle to make a dashboard public

* config struct for public dashboard config
* api endpoints for public dashboard configuration
* ui for toggling public dashboard on and off
* load public dashboard config on share modal

Co-authored-by: Owen Smallwood <owen.smallwood@grafana.com>
Co-authored-by: Torkel Ödegaard <torkel@grafana.com>

pkg/models/dashboards.go

@@ -199,11 +199,16 @@ type Dashboard struct {
 	FolderId  int64
 	IsFolder  bool
 	HasAcl    bool
+	IsPublic  bool
 
 	Title string
 	Data  *simplejson.Json
 }
 
+type PublicDashboardConfig struct {
+	IsPublic bool `json:"isPublic"`
+}
+
 func (d *Dashboard) SetId(id int64) {
 	d.Id = id
 	d.Data.Set("id", id)
@@ -411,6 +416,12 @@ type DeleteOrphanedProvisionedDashboardsCommand struct {
 	ReaderNames []string
 }
 
+type SavePublicDashboardConfigCommand struct {
+	Uid                   string
+	OrgId                 int64
+	PublicDashboardConfig PublicDashboardConfig
+}
+
 //
 // QUERIES
 //