Refactor server_keys service/interface and related callsites

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

src/service/server_keys/sign.rs

@@ -0,0 +1,18 @@
+use conduit::{implement, Result};
+use ruma::{CanonicalJsonObject, RoomVersionId};
+
+#[implement(super::Service)]
+pub fn sign_json(&self, object: &mut CanonicalJsonObject) -> Result {
+	use ruma::signatures::sign_json;
+
+	let server_name = self.services.globals.server_name().as_str();
+	sign_json(server_name, self.keypair(), object).map_err(Into::into)
+}
+
+#[implement(super::Service)]
+pub fn hash_and_sign_event(&self, object: &mut CanonicalJsonObject, room_version: &RoomVersionId) -> Result {
+	use ruma::signatures::hash_and_sign_event;
+
+	let server_name = self.services.globals.server_name().as_str();
+	hash_and_sign_event(server_name, self.keypair(), object, room_version).map_err(Into::into)
+}