Add opt-in compose files to run vouch or lighthouse

[corverroos]

🚀 Feature Request

Problem to be solved

This repo only support teku VC, but we want to add support for multiple VCs. So add opt-in compose files for other VCs and a way to disable teku. This will allow us to dogfood more VCs in our internal clusters.

Proposed Solution

• Add compose-vouch.yml and compose-lighthouse.yml
• These start VCs that connect to the main compose network
• Add profiles to teku and examples to disable it in override.yml

NOTE: This ticket is part of an epic.