added support for image orientation filter (#4404)

* added support for image orientation filter
* Add orientation filtering to scenes
---------
Co-authored-by: WithoutPants <53250216+WithoutPants@users.noreply.github.com>

pkg/sqlite/criterion_handlers.go

@@ -0,0 +1,43 @@
+package sqlite
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/stashapp/stash/pkg/models"
+)
+
+// shared criterion handlers go here
+
+func orientationCriterionHandler(orientation *models.OrientationCriterionInput, heightColumn string, widthColumn string, addJoinFn func(f *filterBuilder)) criterionHandlerFunc {
+	return func(ctx context.Context, f *filterBuilder) {
+		if orientation != nil {
+			if addJoinFn != nil {
+				addJoinFn(f)
+			}
+
+			var clauses []sqlClause
+
+			for _, v := range orientation.Value {
+				// width mod height
+				mod := ""
+				switch v {
+				case models.OrientationPortrait:
+					mod = "<"
+				case models.OrientationLandscape:
+					mod = ">"
+				case models.OrientationSquare:
+					mod = "="
+				}
+
+				if mod != "" {
+					clauses = append(clauses, makeClause(fmt.Sprintf("%s %s %s", widthColumn, mod, heightColumn)))
+				}
+			}
+
+			if len(clauses) > 0 {
+				f.whereClauses = append(f.whereClauses, orClauses(clauses...))
+			}
+		}
+	}
+}