Use recommended Cargo.toml from Bevy docs

[laundmo]

I've just stumbled across your guide, and noticed something crucial missing from it: optimizations for debug builds.

Bevy documents this here: https://bevy.org/learn/quick-start/getting-started/setup/#compile-with-performance-optimizations

It's not uncommon for debug builds using the default configuration to take multiple minutes to load large 3D models, or for the framerate for simple scenes to drop to near-unplayable levels.

The recommended step to resolve this is adding the following to Cargo.toml

# Enable a small amount of optimization in the dev profile.
[profile.dev]
opt-level = 1

# Enable a large amount of optimization in the dev profile for dependencies.
[profile.dev.package."*"]
opt-level = 3

I think it would be great if you could update both your articles, and this repo, to include this, to help readers avoid this footgun.

[jamesfebin]

Thank you, will include this change once I release the next chapter.

[jamesfebin]

I have updated this both on the repo and also on the tutorial. Thank you.