Add event to notify of the initialization completed

[andreccorrea]

Creates and dispatches the event "dal-element-initialized" to notify of the element initialization completed.

Usage:

$(document).on("dal-element-initialized", function(e) {
    $(`#${e.detail.element.id}`).select2('open').trigger('focus')
});

[jpic]

Hi,

Is it possible to mention this in the documentation?

Thanks

[andreccorrea]

Updated JS docs tutorial with initialization event (dal-element-initialized) example.