Add initial cargo files

Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "my-bevy-game"
+version = "0.1.0"
+edition = "2021"
+
+# Enable a small amount of optimization in debug mode
+[profile.dev]
+opt-level = 1
+
+# Enable high optimizations for dependencies (incl. Bevy), but not for our code:
+[profile.dev.package."*"]
+opt-level = 3
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+bevy = "0.13.0"