Cardano Updates

Dockerfile and scripts for building immdb-server container
for Antithesis testing:

- Dockerfile.immdb-server: Multi-stage build using Blink Labs base image,
  builds immdb-server and leiosdemo202510 from ouroboros-consensus
  leios-prototype branch
- init-upstream.sh: Generates leios.db and schedule.json using
  leiosdemo202510, extracts immutable chain data, patches genesis paths
- run-upstream.sh: Runtime script with optional WAN emulation

Signed-off-by: Chris Gianelloni <[email protected]>

Dockerfile and scripts for building cardano-node-leios container
for Antithesis testing:

- Dockerfile.cardano-node: Multi-stage build using Blink Labs base image,
  builds cardano-node from leios-prototype branch with patched
  ouroboros-consensus reference for LeiosDemoDb support
- init-node0.sh: Initializes node0 data directory with leios.db,
  topology.json, and patched genesis paths
- init-downstream.sh: Initializes downstream node connecting to node0
- run-cardano-node.sh: Runtime script with optional WAN emulation
- setup-wan-emulation.sh: tc-based network shaping for local testing

Signed-off-by: Chris Gianelloni <[email protected]>

This requires the latest leios-prototype branches to work.

Also convert config to yaml for it allows comments (this re-enables a
lot of tracers)