autofocus in the show action view

[luiscobot]

since the first task in the show view is to enter the secret token, maybe will be a good idea to add autofocus to the input, like in the new action view

passwordless/app/views/passwordless/sessions/show.html.erb

Line 3 in c9e5fef

<%= f.text_field :token %>

passwordless/app/views/passwordless/sessions/new.html.erb

Lines 6 to 10 in c9e5fef

	<%= email_field_tag email_field_name,
	params.fetch(email_field_name, nil),
	required: true,
	autofocus: true,
	placeholder: t("passwordless.sessions.new.email.placeholder") %>

[mikker]

Sure, PR welcome 👍

[mikker]

Maybe add autocomplete="one-time-code" as well? https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes/autocomplete