add hello world application with bevy dependency

.gitignore

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+target

Cargo.toml

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+[package]
+name = "noname"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+bevy = { version = "0.13.0", features = ["dynamic_linking"] }
+
+# 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

src/main.rs

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+fn main() {
+    println!("Hello, world!");
+}