Tons of refactoring, moving commands and slash commands into hooks

plugos/syscalls/event.ts

@@ -0,0 +1,10 @@
+import { SysCallMapping } from "../system";
+import { EventHook } from "../hooks/event";
+
+export function eventSyscalls(eventHook: EventHook): SysCallMapping {
+  return {
+    async dispatch(ctx, eventName: string, data: any) {
+      return eventHook.dispatchEvent(eventName, data);
+    },
+  };
+}