Add provision command

Justfile

@@ -1,11 +1,19 @@
+# Run the given ROM file
 run rom:
     cargo run --no-default-features --features=sdl -- '{{rom}}'
 
+# Build the web version, storing the result in `./web/dist`
 build-web:
     cd web && npm install && npx webpack
 
+# Build and serve the web version
 serve:
     cd web && npm install && npx webpack serve
 
+# Run all tests
 test:
-    cargo test
+    cargo test
+
+# Provision infrastructure using Terraform
+provision:
+    cd deploy/infrastructure && terraform apply