Improve the look of the calendar invite sent via mail #4039
Description
Is your feature request related to a problem? Please describe.
When you create an calendar event and add some attendees, the email that is sent out is not formatted well, and does not look great on mobile either.
Describe the solution you'd like
To improve this, we could do something similar to the design of the .ics file infobox that was discussed in Mail nextcloud/mail#160 (comment)
Before screenshots
With images
If images are blocked
After screenshots
With images
If images are blocked
- everything is left aligned and responsive for a better experience on mobile
- if images are not shown by the mail client, there should be fallback text (is this possible? If not we could just use text all the time)
cc @jancborchardt who also did the mockups :)
Describe alternatives you've considered
No response
Additional context
No response