create-turbo: improve test cases and make them pass (#1655)

- Make existing tests pass
- Add GH action to run tests in CI

  Set up a new Github Action that builds the turbo CLI (since that is
  required for the create-turbo tests) and runs the JS tests for that
  package.

  Notable things:

  - Installs yarn and disables corepack as part of the test suite. This
    is the pristine state we want for the tests that exist today. For
    future tests cases that have a different setup, we may need to
    modify this more.

  - Disables Windows tests. This yarn setup on Windows does not seem to
    work, but this gets us one step forward.

Author: mehulkar

.github/workflows/ci-go.yml

@@ -1,4 +1,4 @@
-name: CI
+name: CI Go
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}

.github/workflows/ci-js.yml

@@ -0,0 +1,78 @@
+name: CI JS
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    types: [opened, edited, synchronize]
+
+jobs:
+  build:
+    name: build and test
+    timeout-minutes: 15
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [
+          ubuntu-latest,
+          macos-latest,
+          # windows-latest,
+        ]
+
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 2
+
+      - name: Set up Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: 1.18.0
+          cache: true
+          cache-dependency-path: cli/go.sum
+
+      - name: Set Up Protoc
+        uses: arduino/setup-protoc@v1
+        with:
+          version: "3.x"
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Set Up Go and GRPC protobuf
+        run: |
+          go install google.golang.org/protobuf/cmd/[email protected]
+          go install google.golang.org/grpc/cmd/[email protected]
+
+      - uses: pnpm/[email protected]
+        with:
+          version: 7.2.1
+
+      - name: Setup Yarn
+        run: npm i -g yarn
+
+      - name: Setup Node.js environment
+        uses: actions/setup-node@v2
+        with:
+          node-version: 16
+          cache: pnpm
+
+      - name: Configure corepack
+        # Forcibly upgrade our available version of corepack.
+        # The bundled version in node 16 has known issues.
+        # Prepends the corepack bin dir so that it is always first.
+        shell: bash
+        run: |
+          npm install --force --global corepack@latest
+          npm config get prefix >> $GITHUB_PATH
+          corepack enable
+
+      - name: Install dependencies
+        run: pnpm install
+
+      - name: Run create-turbo tests
+        run: pnpm -- turbo run test --filter=create-turbo --color