Split pusher service send/request into unit.

Refactor sender's push destination handler.

Combine remnants of service::rooms::user with pusher service.

Further split and reorg pusher service units.

Signed-off-by: Jason Volk <jason@zemos.net>

src/service/services.rs

@@ -49,7 +49,6 @@ pub struct Services {
 	pub threads: Arc<rooms::threads::Service>,
 	pub timeline: Arc<rooms::timeline::Service>,
 	pub typing: Arc<rooms::typing::Service>,
-	pub user: Arc<rooms::user::Service>,
 	pub federation: Arc<federation::Service>,
 	pub sending: Arc<sending::Service>,
 	pub server_keys: Arc<server_keys::Service>,
@@ -107,7 +106,6 @@ pub async fn build(server: Arc<Server>) -> Result<Arc<Self>> {
 		threads: rooms::threads::Service::build(&args)?,
 		timeline: rooms::timeline::Service::build(&args)?,
 		typing: rooms::typing::Service::build(&args)?,
-		user: rooms::user::Service::build(&args)?,
 		federation: federation::Service::build(&args)?,
 		sending: sending::Service::build(&args)?,
 		server_keys: server_keys::Service::build(&args)?,
@@ -166,7 +164,6 @@ pub(crate) fn services(&self) -> impl Iterator<Item = Arc<dyn Service>> + Send {
 		cast!(self.threads),
 		cast!(self.timeline),
 		cast!(self.typing),
-		cast!(self.user),
 		cast!(self.federation),
 		cast!(self.sending),
 		cast!(self.server_keys),