Add MicroslopSam TTS, Flextalk voice profiles, effects, and engine controls

poc/src/puppet.ts

@@ -157,6 +157,11 @@ export class Puppet {
     private selfId?: string;
     private queue: Promise<void> = Promise.resolve();
 
+    /** The logged-in account's user ID, once the core has been asked for it. */
+    get self(): string | undefined {
+        return this.selfId;
+    }
+
     constructor(
         private readonly core: PuppetTransport,
         private readonly audio?: PuppetAudio