v0.5: Makefile for fast Pi iterations

[stephane-caron]

This release introduces a Makefile to simplify building and running controllers on the Raspberry Pi. It also brings a bunch of fixes and minor "quality of life" improvements 😉

Added

• Example: wheeled balancing with CPU isolation
• Example: wheeled balancing with action-observation logging
• Makefile to build, upload and run Raspberry Pi targets
• Script to start a simulation directly from the repository
• Specify Bazel version in .bazelversion

Changed

• Remove utils.logging submodule, deprecated by mpacklog
• Rename "blue balancer" agent to "test balancer"
• Simplify test balancer code
• Update Bazelisk to v1.16.0
• UpkieWheelsEnv: version 2

Fixed

• Conversion warnings in servos and wheels environments
• Examples: make sure environments are closed before exiting
• PPO balancer: fix testing script
• PPO balancer: save policy with new environment
• PPO balancer: simplify training
• Pink balancer: default frequency is 200 Hz

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This discussion was created from the release v0.5.0.