DashboardSchema: Add options to VariableModel (#79236)

* Add includeAll and regex fields to VariableModel  #67639

* Add allValue option to VariableModel

kinds/dashboard/dashboard_kind.cue

@@ -199,9 +199,17 @@ lineage: schemas: [{
 			multi?: bool | *false
 			// Options that can be selected for a variable.
 			options?: [...#VariableOption]
+			// Options to config when to refresh a variable
 			refresh?: #VariableRefresh
 			// Options sort order
 			sort?: #VariableSort
+			// Whether all value option is available or not
+			includeAll?: bool | *false
+			// Custom all value
+			allValue?: string
+			// Optional field, if you want to extract part of a series name or metric node segment.
+			// Named capture groups can be used to separate the display text and value.
+			regex?: string
 			...
 		} @cuetsy(kind="interface") @grafana(TSVeneer="type") @grafanamaturity(NeedsExpertReview)