Fix CI workflow: specify working directory for Rust project

.gitea/workflows/ci.yml

@@ -13,7 +13,27 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-rust@v1
         with:
-          rust-version: stable
+          rust-version: '1.70'
+          components: rustfmt, clippy
+      - name: Set up project directory
+        run: mkdir -p app/api-token-vault
+      - name: Move to project directory
+        working-directory: ./app/api-token-vault
       - run: cargo build --all-features
-      - run: cargo test --all-features
+      - run: cargo test --all
       - run: cargo clippy --all-features -- -D warnings
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-rust@v1
+        with:
+          rust-version: '1.70'
+          components: rustfmt
+      - name: Set up project directory
+        run: mkdir -p app/api-token-vault
+      - name: Move to project directory
+        working-directory: ./app/api-token-vault
+      - name: Check formatting
+        run: cargo fmt -- --check