More options of update from enhance

[slavcodev]

Hello everybody,

I suggest to add new options to update function used in form progressive enhancement.

update(options?: { 
  reset: boolean = true,
  invalidate: 'current' | 'all' | 'none' | true | false = true,
  apply: 'current' | 'always' = 'current',
}): Promise<void>

• invalidate - configure invalidation
  • current - call invalidate;
  • all - call invalideAll (current behavior of function);
  • true is alias to all;
  • false is alias to none;
• apply - configure data updates
  • current - update $page.form and $page.status on the same page you're submitting from (current behavior of function);
  • always - update $page.form and $page.status always, like applyAction behaves;

or something similar which permits to remove applyAction. I think this should improve DX, at least me always is confusing in their different behaviors.

Thanks.