ci: add 'rustfmt' component for test workflow

.cargo/config.toml

@@ -5,6 +5,7 @@ rustflags = [
     "-C", "link-args=-sUSE_SDL=2 -sUSE_SDL_IMAGE=2 -sUSE_SDL_MIXER=2 -sUSE_OGG=1 -sUSE_SDL_GFX=2 -sUSE_SDL_TTF=2 -sSDL2_IMAGE_FORMATS=['png']",
     "-C", "link-args=--preload-file assets/game/",
 ]
+runner = "node"
 
 [target.'cfg(target_os = "linux")']
 rustflags = [

.github/workflows/test.yaml

@@ -19,7 +19,7 @@ jobs:
         uses: dtolnay/rust-toolchain@master
         with:
           toolchain: ${{ env.RUST_TOOLCHAIN }}
-          components: clippy
+          components: clippy, rustfmt
 
       - name: Rust Cache
         uses: Swatinem/rust-cache@v2