[Doc] Add JSDoc linter & general comment clean up (#611)

- Prefer comments above lines over end-of-line comments
  - Makes auto-formatting easier
  - Subjective, but it is generally easier to read in JS
- Standardises JSdoc format
- Auto-fixes for many issues (applies on save w/ESLint extension)

src/widgets/ButtonWidget.ts

@@ -19,8 +19,8 @@ export class ButtonWidget extends BaseWidget implements IButtonWidget {
 
   /**
    * Draws the widget
-   * @param ctx - The canvas context
-   * @param options - The options for drawing the widget
+   * @param ctx The canvas context
+   * @param options The options for drawing the widget
    */
   override drawWidget(ctx: CanvasRenderingContext2D, options: {
     y: number