Initial-ish commit

The first commit following this tutorial. My plan was to commit and push
after each section, but I've already done two. Ooops.

I'll be better from here on out, I promise.

Cargo.toml

@@ -0,0 +1,9 @@
+[package]
+name = "roguelike"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+tcod = "0.15"