Make embedUrl an optional callback

[espertype]

This is a small tweak meant to allow constructing the embedUrl programmatically.

Here is an example of how it could be used in combination with CookieConsent, based on the StackBlitz example.
Depending on the user consent for the 'vimeo_analytics' service, the Do Not Track URL parameter for Vimeo is appended to the URL:

const im = iframemanager();

im.run({
    onChange: ({changedServices, eventSource}) => {
        if (eventSource.type === 'click') {
            // ...
        }
    },

    currLang: 'en',

    services: {
        vimeo: {
            // embedUrl: 'https://player.vimeo.com/video/{data-id}',
            embedUrl: () => {
                return CookieConsent.acceptedService('vimeo_analytics', 'analytics') ?
                    'https://player.vimeo.com/video/{data-id}'
                    : 'https://player.vimeo.com/video/{data-id}?dnt=1';
            },
            iframe: {
                allow: 'fullscreen; picture-in-picture;',
            },

            thumbnailUrl: 'https://example.com/img/vimeo-placeholder.jpg',

            languages: {
                en: {
                    notice:
                        'This content is hosted by a third party. By showing the external content you accept the <a rel="noreferrer noopener" href="https://vimeo.com/terms" target="_blank">terms and conditions</a> of vimeo.com.',
                    loadBtn: 'Load once',
                    loadAllBtn: "Don't ask again",
                },
            },
        },
    },
});

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[orestbida]

Thanks for your contribution!