Split workflow run into more jobs

The unit tests and linting is now run separately, which will hopefully
speed up the time it takes for the integration tests to complete.

.github/workflows/main.yml

@@ -23,6 +23,8 @@ jobs:
       - uses: actions/setup-node@v3
         with:
           node-version: '16.14.2'
+          cache: 'npm'
+          cache-dependency-path: extensions/ql-vscode/package-lock.json
 
       - name: Install dependencies
         working-directory: extensions/ql-vscode
@@ -67,10 +69,40 @@ jobs:
           LATEST=`gh api repos/dsp-testing/codeql-cli-nightlies/releases --jq '.[].tag_name' --method GET --raw-field 'per_page=1'`
           echo "nightly-url=https://github.com/dsp-testing/codeql-cli-nightlies/releases/download/$LATEST" >> "$GITHUB_OUTPUT"
 
-  test:
-    name: Test
+  lint:
+    name: Lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 1
+
+      - uses: actions/setup-node@v3
+        with:
+          node-version: '16.14.2'
+          cache: 'npm'
+          cache-dependency-path: extensions/ql-vscode/package-lock.json
+
+      - name: Install dependencies
+        working-directory: extensions/ql-vscode
+        run: |
+          npm install
+        shell: bash
+
+      - name: Lint
+        working-directory: extensions/ql-vscode
+        run: |
+          npm run lint
+
+      - name: Lint scenarios
+        working-directory: extensions/ql-vscode
+        run: |
+          npm run lint:scenarios
+
+  unit-test:
+    name: Unit Test
     runs-on: ${{ matrix.os }}
-    needs: [find-nightly]
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
@@ -83,6 +115,37 @@ jobs:
       - uses: actions/setup-node@v3
         with:
           node-version: '16.14.2'
+          cache: 'npm'
+          cache-dependency-path: extensions/ql-vscode/package-lock.json
+
+      - name: Install dependencies
+        working-directory: extensions/ql-vscode
+        run: |
+          npm install
+        shell: bash
+
+      - name: Run unit tests
+        working-directory: extensions/ql-vscode
+        run: |
+          npm run test
+
+  test:
+    name: Test
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 1
+
+      - uses: actions/setup-node@v3
+        with:
+          node-version: '16.14.2'
+          cache: 'npm'
+          cache-dependency-path: extensions/ql-vscode/package-lock.json
 
       - name: Install dependencies
         working-directory: extensions/ql-vscode
@@ -98,28 +161,6 @@ jobs:
           npm run build
         shell: bash
 
-      - name: Lint
-        working-directory: extensions/ql-vscode
-        run: |
-          npm run lint
-
-      - name: Lint scenarios
-        working-directory: extensions/ql-vscode
-        run: |
-          npm run lint:scenarios
-
-      - name: Run unit tests (Linux)
-        working-directory: extensions/ql-vscode
-        if: matrix.os == 'ubuntu-latest'
-        run: |
-          npm run test
-
-      - name: Run unit tests (Windows)
-        if: matrix.os == 'windows-latest'
-        working-directory: extensions/ql-vscode
-        run: |
-          npm run test
-
       - name: Run integration tests (Linux)
         if: matrix.os == 'ubuntu-latest'
         working-directory: extensions/ql-vscode
@@ -157,6 +198,8 @@ jobs:
       - uses: actions/setup-node@v3
         with:
           node-version: '16.14.2'
+          cache: 'npm'
+          cache-dependency-path: extensions/ql-vscode/package-lock.json
 
       - name: Install dependencies
         working-directory: extensions/ql-vscode