fix Suite and Test typings for #3495 (#3497)

## Proposed changes

fix Suite and Test typings 

## Types of changes

- [x] Bugfix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

## Checklist

- [x] I have read the [CONTRIBUTING](https://github.com/webdriverio/webdriverio/blob/master/CONTRIBUTING.md) doc
- [ ] I have added tests that prove my fix is effective or that my feature works
- [ ] I have added necessary documentation (if appropriate)

## Further comments

#3495

### Reviewers: @webdriverio/technical-committee

packages/wdio-jasmine-framework/jasmine-framework.d.ts

@@ -1,6 +1,6 @@
 /// <reference types="jasmine"/>
 
-declare namespace WebDriverIO {
+declare namespace WebdriverIO {
     interface Suite {
         title: string;
         fullName: string;
@@ -11,4 +11,8 @@ declare namespace WebDriverIO {
         parent: string;
         passed: boolean;
     }
-}
+}
+
+declare module "@wdio/jasmine-framework" {
+    export default WebdriverIO
+}

packages/wdio-mocha-framework/mocha-framework.d.ts

@@ -1,7 +1,8 @@
 /// <reference types="mocha"/>
 
-declare namespace WebDriverIO {
+declare namespace WebdriverIO {
     interface Suite {
+        file: string;
         title: string;
         parent: string;
         fullTitle: string;
@@ -11,6 +12,10 @@ declare namespace WebDriverIO {
     interface Test extends Suite {
         currentTest: string;
         passed: boolean;
-        duration: any;
+        duration?: number;
     }
-}
+}
+
+declare module "@wdio/mocha-framework" {
+    export default WebdriverIO
+}

packages/wdio-selenium-standalone-service/selenium-standalone-service.d.ts

@@ -1,6 +1,6 @@
 import { InstallOpts, StartOpts } from "selenium-standalone";
 
-declare namespace WebdriverIO {
+declare module "webdriverio" {
     interface Config {
         seleniumLogs?: string;
         seleniumInstallArgs?: InstallOpts;

scripts/templates/webdriverio.tpl.d.ts

@@ -56,7 +56,7 @@ declare namespace WebdriverIO {
             alpha?: number,
             type?: string,
             rgba?: string
-       }
+        }
     }
 
     interface Options {
@@ -80,6 +80,9 @@ declare namespace WebdriverIO {
         execArgv?: string[]
     }
 
+    interface Suite {}
+    interface Test {}
+
     interface Hooks {
 
         onPrepare?(
@@ -191,7 +194,7 @@ declare namespace WebdriverIO {
 
     type Omit<T, K extends keyof T> = Pick<T, Exclude<keyof T, K>>;
 
-    type Config = Options & Omit<WebDriver.Options, "capabilities"> & Hooks;
+    interface Config extends Options, Omit<WebDriver.Options, "capabilities">, Hooks {}
 }
 
 declare var browser: WebDriver.Client<void> & WebdriverIO.Browser<void>;