Add logger function to video.js Log interface (#39303)

* Add logger function to video.js Log interface

* Add logger function to video.js Log interface

* Bump version and move Definitions_by to the top

* Add video.js logger test

types/video.js/index.d.ts

@@ -1,4 +1,4 @@
-// Type definitions for Video.js 7.2
+// Type definitions for Video.js 7.3
 // Project: https://github.com/videojs/video.js, https://videojs.com
 // Definitions by: Vincent Bortone <https://github.com/vbortone>
 //                 Simon Clériot <https://github.com/scleriot>
@@ -10,6 +10,7 @@
 //                 Adam Eisenreich <https://github.com/AkxeOne>
 //                 Mei Qingguang <https://github.com/meikidd>
 //                 Joe Flateau <https://github.com/joeflateau>
+//                 KuanYu Chu <https://github.com/ckybonist>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 // TypeScript Version: 2.1
 
@@ -2922,6 +2923,14 @@ declare namespace videojs {
 		 */
 		(...args: any[]): void;
 
+		/**
+		 * Make a new module or plugin and log messages with a label.
+		 * It takes a name and gives you back a log object like videojs.log
+		 *
+		 * @param label
+		 */
+		createLogger: (label: string) => Log;
+
 		/**
 		 * Logs debug messages. Similar to `console.debug`, but may also act as a comparable
 		 * log if `console.debug` is not available

types/video.js/video.js-tests.ts

@@ -70,6 +70,8 @@ videojs("example_video_1").ready(function() {
 	testPlugin(this, {});
 
 	testAugmentation(this);
+
+	testLogger();
 });
 
 function testEvents(player: videojs.Player) {
@@ -119,11 +121,20 @@ function testPlugin(player: videojs.Player, options: {}) {
 }
 
 function testAugmentation(player: videojs.Player) {
-    player.somePluginDefinedInAugmentation();
-    videojs("example_video_2", {
+	player.somePluginDefinedInAugmentation();
+	videojs("example_video_2", {
 		plugins: {
 			somePluginDefinedInAugmentation: {},
 			someOtherPluginNotTyped: {}
 		}
 	});
 }
+
+function testLogger() {
+	const mylogger = videojs.log.createLogger('mylogger');
+	const anotherlogger = mylogger.createLogger('anotherlogger');
+
+	videojs.log('hello');
+	mylogger('how are you');
+	anotherlogger('today');
+}