Images without fill option can't be hovered

[GMartigny]

Information

• Your current navigator: Chrome v78
• The package and version you used: @pencil.js/component@1.12.0 pencil.js/image@1.12.0

Description

The Component's isHover function returns true only if the Component is either filled or stroked. Image can be drawn without neither of these and are not detected as hovered.

As with malePath, maybe Image need its own duplication of isHover to account for this.

May be fixed by a refacto when doing #67.

Reproduce by

const img = new P.Image(scene.center, "url.png", {
    fill: "white", // <- The image can't be hovered without this
});
img.on("ready", () => scene.add(img).render())
    .on("hover", console.log("Hover"));