feat(login): use default org for login without provided org context (#6625)

* start feature flags

* base feature events on domain const

* setup default features

* allow setting feature in system api

* allow setting feature in admin api

* set settings in login based on feature

* fix rebasing

* unit tests

* i18n

* update policy after domain discovery

* some changes from review

* check feature and value type

* check feature and value type

internal/domain/feature.go

@@ -0,0 +1,28 @@
+//go:generate enumer -type Feature
+
+package domain
+
+type Feature int
+
+func (f Feature) Type() FeatureType {
+	switch f {
+	case FeatureUnspecified:
+		return FeatureTypeUnspecified
+	case FeatureLoginDefaultOrg:
+		return FeatureTypeBoolean
+	default:
+		return FeatureTypeUnspecified
+	}
+}
+
+const (
+	FeatureTypeUnspecified FeatureType = iota
+	FeatureTypeBoolean
+)
+
+type FeatureType int
+
+const (
+	FeatureUnspecified Feature = iota
+	FeatureLoginDefaultOrg
+)