honor configuration when setting the speech rate

up to now, configuration was read, but never actually used. This begins a series of changes, perhaps across multiple fronts, to do so.
This makes `state::new` send a message on the ssip channel, with the request to set the rate to a user defined value
warning: if somehow the ssip task isn't initialized by the point we get there, the change will be lost in the channel, or may be picked up later than intended

common/src/settings/speech.rs

@@ -3,7 +3,7 @@ use serde::{Deserialize, Serialize};
 #[derive(Debug, Serialize, Deserialize)]
 #[allow(clippy::module_name_repetitions)]
 pub struct SpeechSettings {
-	pub rate: i32,
+	pub rate: i8,
 }
 impl Default for SpeechSettings {
 	fn default() -> Self {

odilia/src/state.rs

@@ -53,7 +53,7 @@ impl ScreenReaderState {
 		let accessible_history = Mutex::new(CircularQueue::with_capacity(16));
 		let event_history = Mutex::new(CircularQueue::with_capacity(16));
 		let cache = Arc::new(Cache::new(atspi.connection().clone()));
-
+ssip.send(SSIPRequest::SetRate(ssip_client_async::ClientScope::Current, config.speech().rate)).await?;
 		Ok(Self {
 			atspi,
 			dbus,