Refactor room_version support code

Fix advertising unsupported room versions

src/api/client/capabilities.rs

@@ -12,7 +12,7 @@ use ruma::{
 	},
 };
 use serde_json::json;
-use tuwunel_core::{Result, Server};
+use tuwunel_core::Result;
 
 use crate::Ruma;
 
@@ -24,8 +24,10 @@ pub(crate) async fn get_capabilities_route(
 	State(services): State<crate::State>,
 	_body: Ruma<get_capabilities::v3::Request>,
 ) -> Result<get_capabilities::v3::Response> {
-	let available: BTreeMap<RoomVersionId, RoomVersionStability> =
-		Server::available_room_versions().collect();
+	let available: BTreeMap<RoomVersionId, RoomVersionStability> = services
+		.config
+		.supported_room_versions()
+		.collect();
 
 	let mut capabilities = Capabilities::default();
 	capabilities.room_versions = RoomVersionsCapability {

src/api/client/room/create.rs

@@ -82,7 +82,7 @@ pub(crate) async fn create_room_route(
 		.as_ref()
 		.map_or(Ok(&services.server.config.default_room_version), |version| {
 			services
-				.server
+				.config
 				.supported_room_version(version)
 				.then_ok_or_else(version, || {
 					err!(Request(UnsupportedRoomVersion(

src/api/client/room/upgrade.rs

@@ -78,7 +78,7 @@ pub(crate) async fn upgrade_room_route(
 	let version_rules = room_version::rules(new_version)?;
 
 	if !services
-		.server
+		.config
 		.supported_room_version(new_version)
 	{
 		return Err!(Request(UnsupportedRoomVersion(