Adding upstream version 3.10.8.

Signed-off-by: Daniel Baumann <daniel@debian.org>

tree/f3/forge_factory.go

@@ -0,0 +1,30 @@
+// Copyright Earl Warren <contact@earl-warren.org>
+// Copyright Loïc Dachary <loic@dachary.org>
+// SPDX-License-Identifier: MIT
+
+package f3
+
+import (
+	"fmt"
+	"strings"
+
+	"code.forgejo.org/f3/gof3/v3/tree/generic"
+)
+
+var forgeFactories = make(map[string]ForgeFactory, 10)
+
+type ForgeFactory func(tree generic.TreeInterface, options any) generic.TreeDriverInterface
+
+func RegisterForgeFactory(name string, factory ForgeFactory) {
+	name = strings.ToLower(name)
+	forgeFactories[name] = factory
+}
+
+func GetForgeFactory(name string) ForgeFactory {
+	name = strings.ToLower(name)
+	factory, ok := forgeFactories[name]
+	if !ok {
+		panic(fmt.Errorf("no forge registered for %s", name))
+	}
+	return factory
+}