API Popover
<slot>: HTMLelement | SvelteComponent
Popover togglerHTMLelement | SvelteComponent<slot name="content">: HTMLelement | SvelteComponent
Popover contentHTMLelement | SvelteComponentside: Side = "top"
Popover sidetop | right | bottom | lefttransparent: boolean = false
Dropdown transparenttrue | falseshadowed: boolean = true
Dropdown shadowedtrue | false