Allow users to select shown contact details

[charludo]

Short description

This PR allows users to choose which contact details are shown when they insert a contact into TinyMCE, as well as when updating the contact later on.

Proposed changes

• use a GET parameter to encode which contact details should be shown on a per-contact-card basis
• show appropriate checkboxes after selecting a contact through Tomselect

Side effects

• styling the checkboxes was... a challenge, since I frustratingly was not able to target them through the tinymce.css file - if someone knows why/how to fix this, I am all ears!
• suboptimal from a UX perspective: if a user selects a contact, deselects some details, then chooses a different contact, the details selection is reset. Not sure if this is worth the effort to change, though, since the shown checkboxes are necessarily contact-specific

Resolved issues

Fixes: #3258

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Pull Request Review Guidelines

[JoeyStk]

suboptimal from a UX perspective: if a user selects a contact, deselects some details, then chooses a different contact, the details selection is reset. Not sure if this is worth the effort to change, though, since the shown checkboxes are necessarily contact-specific

This might be a question for @osmers :)

[JoeyStk]

Thank you very much!

styling the checkboxes was... a challenge, since I frustratingly was not able to target them through the tinymce.css file - if someone knows why/how to fix this, I am all ears!

I don't, but I think it's still readable and understandable, so I would be okay with leaving it as is :)

[osmers]

suboptimal from a UX perspective: if a user selects a contact, deselects some details, then chooses a different contact, the details selection is reset. Not sure if this is worth the effort to change, though, since the shown checkboxes are necessarily contact-specific

This might be a question for @osmers :)

I don't see a problem with that - it's actually something I would expect, as for a new contact I might want to choose different details to show. So no need to change that from my pov.

[MizukiTemma]

Cool! Thank you so much 😸

Please merge this PR after the release 2025.1.0