Added

• Renderer: new lineJoin property to set the line join style (only support "round" for now in WebGL mode)
• Renderer: add support for line thickness for strokePolygon and strokeRect operations in WebGL

Changed

• Chore: Update to TypeScript 5.5

Fixed

• Renderer: fix fillEllipse() method in WebGL mode (that was stroking the ellipse instead)
• TypeScript: fix most (if not all) missing declarations