Luanti 5.17.0-rc1

This is the first release candidate for 5.17.0. Please report issues on GitHub or the forum. Thank you.

• Windows: see below
• macOS: see below WORK IN PROGRESS
• Android: https://github.com/luanti-org/luanti/actions/runs/31697576038#artifacts
  • You need to manually sign them with apksigner before installing
  • Download without a GitHub account: https://nightly.link/luanti-org/luanti/actions/runs/31697576038