texture-packer: Handle different exporters

[sylvainpolletvillard]

So assetpack is great and I'm very thankful to the Pixi team for working on this.

Currently, the texture-packer plugin use Pixi exporter:

function pixiTexturePacker(options) {
    return texturePacker({
        ...options,
        texturePacker: {
            ...options?.texturePacker,
            exporter: 'Pixi',
        },
    });
}

which makes sense since Pixi made assetpack.
But unfortunately, I use Phaser 3 for my project and Phaser and Pixi use a different format for JSON texture atlas.

The texturepacker plugin code has some code that expects the Pixi exporter and cause exceptions when using another exporter, despite free-tex-packer-core allowing several exporters to be used.

So my question is: would you consider making this tool work for other exporters format than Pixi's one ? Or is it out of the scope of this project ?

If yes, I'll do my best to provide a PR that enables support for Phaser 3 exporter. If not, I'll fork this project and won't annoy you anymore. Thanks for reading ☺