Add '__userRuntime' to interface since it is not kept private

Author: ssoelvsten

rt/src/RuntimeInterface.mts

@@ -11,6 +11,7 @@ export interface RuntimeInterface {
     $t: Thread;   
     $service: any; // todo 2021-06-13; identify what the right interface here should be     
     debug(arg0: string);
+    __userRuntime: any
     __sched: SchedulerInterface
     __mbox : MailboxInterface
     sendMessageNoChecks(toPid: any, message: LVal, arg2?: boolean): any;

rt/src/troupe.mts

@@ -19,9 +19,8 @@ if (!fs.existsSync(p)) {
 }
 (async () => {
     let d = await import (p);
-    let Top = d.default     
-    let __userRuntime = (getRuntimeObject() as any).__userRuntime;
-    let top = new Top(__userRuntime);
+    let Top = d.default;
+    let top = new Top(getRuntimeObject().__userRuntime);
     start(top);
 
 }) ()