chore: add testnet deployment workflow

Author: DJ-Hippo

.github/workflows/deploy-testnet.yml

@@ -0,0 +1,65 @@
+name: Testnet Environment Deployment
+
+on:
+    workflow_dispatch:
+    push:
+        branches:
+            - testnet
+
+jobs:
+    deploy-production:
+        name: Testnet Environment Deployment
+        runs-on: ubuntu-latest
+        environment: testnet
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v4
+
+            - name: Node.js setup
+              uses: actions/setup-node@v4
+              with:
+                  node-version: '18.18.1'
+                  cache: yarn
+
+            - name: Yarn install package
+              run: yarn install --frozen-lockfile
+
+            - name: Setting up environment variables
+              run: |
+                  jq -r 'to_entries|map("\(.key)=\(.value|tostring)")|.[]' <<< $SECRETS_CONTEXT > .env
+              env:
+                  SECRETS_CONTEXT: ${{ toJson(secrets) }}
+
+            - name: App build
+              id: build
+              run: CI=false yarn run build
+
+            - name: AWS Credentials setup
+              uses: aws-actions/configure-aws-credentials@v1
+              with:
+                  aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
+                  aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+                  aws-region: ap-southeast-1
+
+            - name: S3 bucket update
+              run: |
+                  aws s3 cp --recursive --region ap-southeast-1 ./dist "s3://$AWS_S3_BUCKET_NAME/widget"
+              env:
+                  AWS_S3_BUCKET_NAME: ${{ secrets.AWS_S3_BUCKET_NAME }}
+
+            - name: CloudFront cache update
+              run: |
+                  aws cloudfront create-invalidation --distribution-id "$AWS_CLOUDFRONT_DISTRIBUTION_ID" --paths "/*"
+              env:
+                  AWS_CLOUDFRONT_DISTRIBUTION_ID: ${{ secrets.AWS_CLOUDFRONT_DISTRIBUTION_ID }}
+
+            - name: Slack notification
+              uses: 8398a7/action-slack@v3
+              with:
+                  status: ${{ job.status }}
+                  author_name: Hippo River Widget Testnet Environment
+                  mention: '<@dj>'
+                  fields: repo,message,commit,author
+              env:
+                  SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
+              if: always()