Merge stuff from STF 685 into STF_707_TASK3 (!19) · Merge requests · MEC - Multi-access Edge Computing / ETSI MEC Sandbox

Split 'meepctl deploy' into 'meepctl deploy dep' and 'meepctl deploy core' subcommands
Require explicit 'all' target to deploy everything (matching dockerize pattern)
Show valid targets list in help output for both subcommands
Add ANSI colors to help output (error, header, targets) for better visibility
Update Ansible playbook, RUNBOOK, and shell scripts with new 'all' argument

BREAKING: 'meepctl deploy dep' and 'meepctl deploy core' now show help instead of deploying everything. Use 'meepctl deploy dep all' / 'meepctl deploy core all'.