🔁 Add swipe actions to conversation list items

[AndyScherzinger]

Resolves: #6181

A follow up would be to improve the leave-action which fails in certain scenarions, but does so via bottom sheet and convo-info activity as well. However the error snackbar texts are precise on the info screen but generic on the convo list. this is not an issue introduced by this PR, hence left out, to not grow its complexity.

🏁 Checklist

• ⛑️ Tests (unit and/or integration) are included or not needed
• 🔖 Capability is checked or not needed
• 🔙 Backport requests are created or not needed: /backport to stable-xx.x
• 📅 Milestone is set
• 🌸 PR title is meaningful (if it should be in the changelog: is it meaningful to users?)

[github-actions]

APK file: https://github.com/nextcloud/talk-android/actions/runs/25766352371/artifacts/6957586024
To test this change/fix you can simply download above APK file and install and test it in parallel to your existing Nextcloud app.
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[github-actions]

APK file: https://github.com/nextcloud/talk-android/actions/runs/25790384375/artifacts/6966643644
To test this change/fix you can simply download above APK file and install and test it in parallel to your existing Nextcloud app.
(please click on link to get QR code displayed)

[github-actions]

APK file: https://github.com/nextcloud/talk-android/actions/runs/25794931628/artifacts/6969666660
To test this change/fix you can simply download above APK file and install and test it in parallel to your existing Nextcloud app.
(please click on link to get QR code displayed)

[github-actions]

APK file: https://github.com/nextcloud/talk-android/actions/runs/25819770818/artifacts/6979042172
To test this change/fix you can simply download above APK file and install and test it in parallel to your existing Nextcloud app.
(please click on link to get QR code displayed)