feat: initial commit

Signed-off-by: Harald Hoyer <harald@hoyer.xyz>

README.md

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+# bglga 
+
+This project is a simple Galaga-like space shooter game built using the Bevy engine.
+
+## Current State
+
+The game features:
+- A player ship at the bottom of the screen that can move left and right
+- Shooting bullets upward using the spacebar or up arrow key
+- Enemy ships that spawn at the top and move downward
+- Collision detection between bullets and enemies
+
+## Controls
+
+- Move Left: A key or Left Arrow
+- Move Right: D key or Right Arrow
+- Shoot: Spacebar or Up Arrow
+
+## How to Compile
+
+```
+nix develop --command bash -c "cargo build"
+```
+
+## How to Run
+
+1.  Make sure you have Rust and Nix installed.
+2.  Clone the repository.
+3.  Navigate to the project directory.
+4.  Run the game using the command: `nix develop --command bash -c "cargo run"`