feat: add rust cairo compiler to CI

.github/workflows/tests.yml

@@ -50,6 +50,20 @@ jobs:
         if: steps.cached-poetry-dependencies.outputs.cache-hit != 'true'
         run: poetry install --no-interaction --no-root
 
+      - name: Configure Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Build cairo-compile
+        run: cargo build --release --bin cairo-compile
+
+      - name: Build sierra-compile-json
+        run: cargo build --release --bin sierra-compile-json
+
+      - name: Cache Rust dependencies
+        uses: Swatinem/rust-cache@v2
+        with:
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+
       - name: Compile cairo files
         run: make compile