Image build (#4)

* Remove obsolete Lambda packaging script and related configuration files

- Deleted `package_lambda.py` script responsible for packaging AWS Lambda functions and layers.
- Removed `pip.conf` configuration file for pip settings.
- Eliminated `requirements.txt` file that specified Python dependencies.
- Deleted `test_payload.json` used for testing Lambda functions.
- Removed empty JSON and TFVAR files in `varfiles` directory.
- Deleted `variables.tf` file containing Terraform variable definitions.
- Removed `versions.tf` file specifying Terraform version requirements.
- Added new GitHub Actions workflow for building and pushing Lambda container images using Packer.
- Introduced `packer.pkr.hcl` file for Packer configuration to build Docker images for Lambda.

* Refactor GitHub API integration to remove Census-specific references and improve configuration handling

* Update Python setup in build workflow to use actions/setup-python@v4 and improve dependency installation

* Add Terraform backend configuration for GCS storage

* Add GOOGLE_CREDENTIALS environment variable to build workflow

* Remove unused PACKER_GITHUB_API_TOKEN from build workflow environment

---------

Co-authored-by: Dave Arnold <dave@roknsound.com>

.github/workflows/build.yml

@@ -13,10 +13,10 @@ jobs:
   build:
     runs-on: ubuntu-latest
     env:
-      PACKER_GITHUB_API_TOKEN: ${{ secrets.GH_TOKEN }}
       AWS_ACCESS_KEY_ID: ${{ vars.AWS_ACCESS_KEY_ID }}
       AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
       AWS_DEFAULT_REGION: us-east-1
+      GOOGLE_CREDENTIALS: ${{ secrets.GOOGLE_CREDENTIALS }}
 
     steps:
       - uses: actions/setup-node@v3
@@ -43,7 +43,7 @@ jobs:
       - name: Install gtag dependencies
         run: |
           python -m pip install -r requirements.txt
-
+          
       - name: Setup Terraform
         uses: hashicorp/setup-terraform@v3.1.2
         with:
@@ -100,4 +100,3 @@ jobs:
           -var "repository_uri=${{ env.repository_uri }}" \
           -var "tag=${{ env.next_tag }}" \
           packer.pkr.hcl
-