Introduce a new configuration options to add HTML attributes to <title>

[kpumuk]

Introducing a new configuration option to add HTML attributes to the <title> tag. This will allow to update page title from a turbo frame:

<turbo-frame ...>
    <turbo-stream action="update" target="page-title">
        <template>My new title</template>
    </turbo-stream>
</turbo-frame>

Closes #280