chore: enrich scaling log

[Kavinjsir]

Description

This pull request refactors the log output for successful slot scaling operations to include the following fields:

• project_name
• updated_slots
• prev_slots
• org_name

Motivation

This update addresses the needs outlined in Issue #386.

[Kavinjsir]

@begelundmuller Thx for reviewing with suggestions! Just updated code, can you help with another review :) 🏓