feat: add FormIf, FormWrapper, and form reset support

- FormIf for conditional field rendering based on form values
- FormWrapper for wrapping inputs with shared props
- Reset support in FormProvider and FormAction via return { reset: true }

components/form-submit.ts

@@ -4,6 +4,7 @@ export type FormSubmitResult =
   | {
       toast?: string;
       close?: boolean;
+      reset?: boolean;
       error?:
         | string
         | { what: string; where: string }