session-level speech hints, strip trailing punctuation on continuous asr (#151)

lib/session/call-session.js

@@ -261,6 +261,19 @@ class CallSession extends Emitter {
 
   get recordState() { return this._recordState; }
 
+  set globalSttHints({hints, hintsBoost}) {
+    this._globalSttHints = {hints, hintsBoost};
+  }
+
+  get hasGlobalSttHints() {
+    const {hints = []} = this._globalSttHints || {};
+    return hints.length > 0;
+  }
+
+  get globalSttHints() {
+    return this._globalSttHints;
+  }
+
   async notifyRecordOptions(opts) {
     const {action} = opts;
     this.logger.debug({opts}, 'CallSession:notifyRecordOptions');