Adding the ability to display "Text" objects from Tiled

I honestly don't believe text objects look good on map, and in real maps, I think text should be written on tiles.

However, for a variety of use cases (like in test maps in the /maps/test directory, it can be useful to be
able to display some text easily on a map.

This PR adds the ability to display this text.

Note: the "font" support cannot work correctly, as Tiled is listing fonts from the local
system, and those fonts are not available in a browser.

front/src/Phaser/Components/TextUtils.ts

@@ -0,0 +1,45 @@
+import {ITiledMapObject} from "../Map/ITiledMap";
+import Text = Phaser.GameObjects.Text;
+import {GameScene} from "../Game/GameScene";
+import TextStyle = Phaser.GameObjects.TextStyle;
+
+export class TextUtils {
+    public static createTextFromITiledMapObject(scene: GameScene, object: ITiledMapObject): void {
+        if (object.text === undefined) {
+            throw new Error('This object has not textual representation.');
+        }
+        const options: {font?: string} = {};
+        let font = '';
+        if (object.text.italic) {
+            font += 'italic ';
+        }
+        // Note: there is no support for "strikeout" and "underline"
+        let fontSize: number = 16;
+        if (object.text.pixelsize) {
+            font += object.text.pixelsize+'px ';
+            fontSize = object.text.pixelsize;
+        } else {
+            font += '16px ';
+        }
+        if (object.text.fontfamily) {
+            font += '"'+object.text.fontfamily+'"';
+        }
+        if (font !== '') {
+            options.font = font;
+        }
+        const textElem = scene.add.text(object.x, object.y, object.text.text, options);
+        textElem.setFontSize(fontSize);
+        let color = '#000000';
+        if (object.text.color !== undefined) {
+            color = object.text.color;
+        }
+        textElem.setColor(color);
+        if (object.text.wrap) {
+            textElem.setWordWrapWidth(textElem.width);
+        }
+        textElem.setAngle(object.rotation);
+        if (object.text.halign !== undefined) {
+            textElem.setAlign(object.text.halign);
+        }
+    }
+}