Improve dependency management

[Raphael]

Description

Currently it's a manual process within the controller to load further dependencies manually like:

    async _loadDependencies() {
        this._anime = await import('animejs');
    }

Example:
https://github.com/wildhaber/gluebert/blob/develop/documentation/themes/gluebert/src/js/modules/process-illustration/process-illustration.controller.js#L28-L30

It would be good to be able to define dependencies in the module signature and have them available in the controllers later.