Demo: piper_blockstacking_act

What's Changed

• integrate lerobot by @ethanmclark1 in #1
• add blockstacking task with expanded imitation learning by @ethanmclark1 in #2
• Fix LeRobot IL inference pipeline for LuckyEngine integration by @ethanmclark1 in #3
• Add CLI entry point and auto-launch engine support by @ethanmclark1 in #4

New Contributors

• @ethanmclark1 made their first contribution in #1

Full Changelog: https://github.com/luckyrobots/luckylab/commits/demo-v0.1.0