game: add: class: point and segment, add: type docstring

frontend/static/js/api/game/Point.js

@@ -0,0 +1,30 @@
+
+
+class Point
+{
+    /**
+     * @param {Number} x
+     * @param {Number} y
+     */
+    constructor(x, y)
+    {
+        /**
+         * @type {Number}
+         */
+        this.x = x;
+        /**
+         * @type {Number}
+         */
+        this.y = y;
+    }
+
+    from_json(data)
+    {
+        this.x = data.x
+        this.y = data.y
+
+        return this
+    }
+}
+
+export { Point }