Update types for dnssd (#25054)

* Added types for dnssd

* Cosmetics, test passed

* Removed unused rules

* Service entry type added
Browser implements EventEmitter

* make tslint happy

types/dnssd/index.d.ts

@@ -4,6 +4,7 @@
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 /// <reference types="node" />
+import { EventEmitter } from 'events';
 
 /** Declaration file generated by dts-gen */
 
@@ -17,7 +18,27 @@ export class Advertisement {
     updateTXT(txtObj: any): void;
 }
 
-export class Browser {
+/**
+ * A service entry as returned by serviceUp
+ */
+export class Service {
+    fullname: string;         // 'InstanceName._googlecast._tcp.local.'
+    name: string;             // 'InstanceName'
+    type: SType;              // { name: 'googlecast'; protocol: 'tcp' }
+    domain: string;           // 'local'
+    host: string;             // 'Hostname.local.'
+    port: number;             // 8009
+    addresses: string[];      // ['192.168.1.15']
+    txt: any;                 // { id: 'strings' }
+    txtRaw: any;
+}
+
+export class SType {
+    name: string;
+    protocol: string;
+}
+
+export class Browser extends EventEmitter {
     constructor(type: any, ...args: any[]);
 
     list(): any;