Add constants used in space summaries

- related PR: matrix-org/dendrite#3134

spec/eventtypes.go

@@ -68,4 +68,8 @@ const (
 	MPresence = "m.presence"
 	// MRoomMembership https://github.com/matrix-org/matrix-doc/blob/clokep/restricted-rooms/proposals/3083-restricted-rooms.md
 	MRoomMembership = "m.room_membership"
+	// MSpaceChild https://spec.matrix.org/v1.7/client-server-api/#mspacechild-relationship
+	MSpaceChild = "m.space.child"
+	// MSpaceParent https://spec.matrix.org/v1.7/client-server-api/#mspaceparent-relationships
+	MSpaceParent = "m.space.parent"
 )

spec/roomtypes.go

@@ -0,0 +1,22 @@
+// Copyright 2023 The Matrix.org Foundation C.I.C.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package spec
+
+const (
+	// Content key for room type in m.room.create event https://spec.matrix.org/v1.7/client-server-api/#mroomcreate
+	MRoomCreateTypeContentKey = "type"
+	// MSpace https://spec.matrix.org/v1.7/client-server-api/#types
+	MSpace = "m.space"
+)