Include subsidiary studios/tags in tab badge counters (#3816)

* Add '_all' counts
* Use '_all' counts in UI
* Make other counts non-nullable
* Hide tab counts if zero
* Add resolver parameter

pkg/movie/query.go

@@ -0,0 +1,28 @@
+package movie
+
+import (
+	"context"
+	"strconv"
+
+	"github.com/stashapp/stash/pkg/models"
+)
+
+type Queryer interface {
+	Query(ctx context.Context, movieFilter *models.MovieFilterType, findFilter *models.FindFilterType) ([]*models.Movie, int, error)
+}
+
+type CountQueryer interface {
+	QueryCount(ctx context.Context, movieFilter *models.MovieFilterType, findFilter *models.FindFilterType) (int, error)
+}
+
+func CountByStudioID(ctx context.Context, r CountQueryer, id int, depth *int) (int, error) {
+	filter := &models.MovieFilterType{
+		Studios: &models.HierarchicalMultiCriterionInput{
+			Value:    []string{strconv.Itoa(id)},
+			Modifier: models.CriterionModifierIncludes,
+			Depth:    depth,
+		},
+	}
+
+	return r.QueryCount(ctx, filter, nil)
+}