tts: start splitting out tts into its own module, to grow later with more features

src/tts.rs

@@ -0,0 +1,16 @@
+use std::process::Command;
+
+pub async fn start_tts() -> tokio::sync::mpsc::Sender<String> {
+
+    let (tts_request_sender, mut tts_request_receiver) = tokio::sync::mpsc::channel(3);
+
+    // Set up the TTS task
+    tokio::spawn(async move {
+        while let Some(text) = tts_request_receiver.recv().await {
+            // TODO: We should also have espeak pipe out to stdout, then we can apply some audio effects and write to our own jack port.
+            Command::new("espeak-ng").arg("-v").arg("en-us+f3").arg(text).spawn().unwrap().wait().unwrap();
+        }
+    });
+
+    tts_request_sender
+}