Move sdp_stream_metadata schema to new components folder

Signed-off-by: Kévin Commaille <zecakeh@tedomum.fr>

data/event-schemas/schema/m.call.answer.yaml

@@ -29,7 +29,7 @@
                     "required": ["type", "sdp"]
                 },
                 "sdp_stream_metadata": {
-                    "$ref": "core-event-schema/sdp_stream_metadata.yaml"
+                    "$ref": "components/sdp_stream_metadata.yaml"
                 }
             },
             "required": ["answer"]

data/event-schemas/schema/m.call.invite.yaml

@@ -38,7 +38,7 @@
                     "x-addedInMatrixVersion": "1.7"
                 },
                 "sdp_stream_metadata": {
-                    "$ref": "core-event-schema/sdp_stream_metadata.yaml"
+                    "$ref": "components/sdp_stream_metadata.yaml"
                 }
             },
             "required": ["offer", "lifetime"]

data/event-schemas/schema/m.call.negotiate.yaml

@@ -64,7 +64,7 @@ properties:
         description: The time in milliseconds that the negotiation is valid for.
           Once the negotiation age exceeds this value, clients should discard it.
       sdp_stream_metadata:
-        $ref: core-event-schema/sdp_stream_metadata.yaml
+        $ref: components/sdp_stream_metadata.yaml
     required:
     - description
     - lifetime