Add last contact twenty app (#21464)

Adds a last contact at column in people object
- backfill at installation
- update last contact when receiving an email or a calendar event
- cron to update last contact with recently passed calendar event

@Bonapara can you check the app logo?

<img width="909" height="464" alt="image"
src="https://github.com/user-attachments/assets/ca1c01a5-9838-4cf0-b0b8-d66a7f88b5fc"
/>

---------

Co-authored-by: Thomas des Francs <tdesfrancs@gmail.com>
Co-authored-by: Raphaël Bosi <71827178+bosiraphael@users.noreply.github.com>

.gitignore

@@ -57,3 +57,4 @@ TRANSLATION_QA_REPORT.md
 .playwright-cli/
 output/playwright/
 screenshots/
+!**/screenshots/