chore(ci): add codebuild github actions runner managed pr build (#35005)

### Issue # (if applicable)

Closes #

### Reason for this change

Adds new PR build that runs on CodeBuild managed Github Actions runner 

### Description of changes

PR Build github workflow 

### Describe any new or updated permissions being added




### Description of how you validated changes



### Checklist
- [ ] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: ozelalisen

.github/workflows/codebuild-pr-build.yml

@@ -0,0 +1,84 @@
+name: Codebuild PR Build
+
+on:
+  workflow_dispatch: {}
+  merge_group: {}
+  push:
+    branches:
+      - main
+      - v2-release
+  pull_request:
+    branches:
+      - main
+      - v2-release
+
+# For every PR, cancel any previous builds in progress
+# ... but for all other builds we keep them running
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}-${{ github.event.pull_request.number || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: codebuild-aws-cdk-github-actions-runner-${{ github.run_id }}-${{ github.run_attempt }}
+
+    env:
+      PR_BUILD: true
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "18"
+          cache: "yarn"
+
+      - name: Set up Docker
+        uses: docker/setup-buildx-action@v3
+
+      - name: Load Docker images
+        id: docker-cache
+        uses: actions/cache/restore@v4
+        with:
+          path: |
+            ~/.docker-images.tar
+          key: docker-cache-${{ runner.os }}
+
+      - name: Restore Docker images
+        if: ${{ steps.docker-cache.outputs.cache-hit }}
+        run: docker image load --input ~/.docker-images.tar
+
+      - name: Cache build artifacts
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.s3buildcache
+          key: s3buildcache-${{ runner.os }}
+
+      - name: Configure system settings
+        run: |
+          (command -v sysctl || sudo apt-get update && sudo apt-get install -y procps) && \
+          sudo sysctl -w vm.max_map_count=2251954
+
+      - name: Build
+        run: /bin/bash ./build.sh --ci
+
+      - name: Run Rosetta
+        run: /bin/bash ./scripts/run-rosetta.sh
+
+      - name: Check for uncommitted changes
+        run: git diff-index --exit-code --ignore-space-at-eol --stat HEAD
+
+      - name: Export Docker images
+        if: ${{ github.event_name == 'push' && github.ref_name == 'main' }}
+        run: docker image save --output ~/.docker-images.tar $(docker image list --format '{{ if ne .Repository "<none>" }}{{ .Repository }}{{ if ne .Tag "<none>" }}:{{ .Tag }}{{ end }}{{ else }}{{ .ID }}{{ end }}')
+
+      - name: Cache Docker images
+        if: ${{ github.event_name == 'push' && github.ref_name == 'main' }}
+        uses: actions/cache/save@v4
+        with:
+          path: |
+            ~/.docker-images.tar
+          key: docker-cache-${{ runner.os }}