feat(NcCheckboxRadioSwitch): add v-model support for checked

[kyteinsky]

Can we get this in nc/vue 8.x or does it not matter since it was added in vue9 recently (#4994)? Would be a nice QOL improvement still.

🏁 Checklist

• ⛑️ Tests are included or are not applicable
• 📘 Component documentation has been extended, updated or is not applicable
• 3️⃣ Backport to next requested with a Vue 3 upgrade

[ShGKme]

I think, that would be good to add model to every component that has modelValue in the next version.

Just to make further migration to v9 easier for library users.

All these components from the Breaking Changes list where it doesn't conflict with the current implementation.

https://github.com/nextcloud-libraries/nextcloud-vue/blob/next/CHANGELOG.md

[ShGKme]

Hey @kyteinsky!

What do you think about adding v-model to all these components?

[kyteinsky]

Hello @ShGKme , sorry I didn't find time for it recently. Yeah, looks like a sound reasoning.

Is it alright if I do that the next week?

[ShGKme]

Is it alright if I do that the next week?

Sure

[kyteinsky]

Some components did not need modification and already work with v-model:

1. NcColorPicker
2. NcDateTimePicker
3. NcDateTimePickerNative
4. NcSelect
5. NcSelectTags
6. NcSettingsSelectGroup
7. NcTimezonePicker

NcActionRadio does not make use of v-model in any useful way so I left it out. Enlighten me if I'm wrong here.

[ShGKme]

Some components did not need modification and already work with v-model:

Confirm, all of them have the default model with :value + @input

NcActionRadio does not make use of v-model in any useful way so I left it out. Enlighten me if I'm wrong here.

It is the same as NcActionCheckbox, it has checked with update:checked event. Let's add event here as well.