Add tests for contact actions

[MizukiTemma]

Short description

This PR adds test for archiving, deleting and restoring of contact objects.

Proposed changes

• Test archiving, deleting and restoring one contact object
• Test bulk archiving, deleting and restoring

Side effects

• The existing tests of the model functions are moved to another file, as they are rather test for "the model" than the user view/action
• Protection of used contacts is not (yet) tested in this PR. We can either merge this PR first and adjust the relevant parts in Prevent orphaned contact cards #3282 or we wait for Prevent orphaned contact cards #3282 and do adjustment here.

Resolved issues

Fixes: #3245

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Pull Request Review Guidelines

[charludo]

Awesome, thank you! 🎉

Protection of used contacts is not (yet) tested in this PR. We can either merge this PR first and adjust the relevant parts in #3282 or we wait for #3282 and do adjustment here.

Definitely merge this one first. The other one additionally depends on the TinyMCE PR.

[lunars97]

Thank you :) Works as expected 🚀