[BITV]: Replace custom tooltips with native one for privacy settings page

[JuliaKirschenheuter]

Problem

To show a tooltip on a several components we currently use v-tooltip. An example can be found in https://github.com/nextcloud/privacy/blob/master/src/components/Location.vue#L29

v-tooltip is not accessible and we want to migrate to native tooltips (title attribute) instead. An overview can be found in nextcloud-libraries/nextcloud-vue#2503.

Solution

Add a title prop to several components that will render as title attribute on the HTML element.