ci: Introduce Nx agents (#6863)

* introducing nx agents

* busting cache to get some test runs in

* fixing distribut option

* fixing yml syntax error

* bumping up agent count

* experimenting with parallel and agent count

* kick tires

* rm stuff to break cache

* reordering setup to start agents earlier

* adding in nvmrc file

* making sure pnpm is there for node setup

* kick tires

* Move parallel flag into workflow

---------

Co-authored-by: Lachlan Collins <1667261+lachlancollins@users.noreply.github.com>

.github/workflows/pr.yml

@@ -34,47 +34,23 @@ jobs:
         with:
           node-version-file: .nvmrc
           cache: pnpm
+      - name: Start Agents
+        run: npx nx-cloud start-ci-run --distribute-on="12 linux-medium-js"
       - name: Install dependencies
         run: pnpm install --frozen-lockfile --prefer-offline
       - name: Get base and head commits for `nx affected`
         uses: nrwl/nx-set-shas@v3
         with:
           main-branch-name: 'main'
-      - name: Start CI Orchestrator
-        run: npx nx-cloud start-ci-run
       - name: Run Tests
-        run: pnpm run test:pr
+        run: pnpm run test:pr --parallel=3
       - name: Stop Agents
         if: ${{ always() }}
         run: npx nx-cloud stop-all-agents
       - name: Upload coverage to Codecov
         uses: codecov/codecov-action@v3
         with:
           directory: packages
-  agents:
-    name: Nx Cloud - Agents
-    runs-on: ubuntu-latest
-    timeout-minutes: 10
-    strategy:
-      matrix:
-        agent: [1, 2, 3]
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-      - name: Setup pnpm
-        uses: pnpm/action-setup@v2
-        with:
-          version: 8
-      - name: Setup Node
-        uses: actions/setup-node@v4
-        with:
-          node-version-file: .nvmrc
-          cache: pnpm
-      - name: Install dependencies
-        run: pnpm install --frozen-lockfile --prefer-offline
-      - name: Start Nx Agent ${{ matrix.agent }}
-        run: npx nx-cloud start-agent
   format:
     name: Format
     runs-on: ubuntu-latest