Add cloudbuild file for bedrock image builds (#3073)

parameterize project

Switch to artifact registry
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

cloudbuild.yaml

+steps:
+  - name: 'gcr.io/kaniko-project/executor:latest'
+    args:
+      - --destination=us-central1-docker.pkg.dev/$PROJECT_ID/images/op-node:$_TAG
+      - --dockerfile=op-node/Dockerfile
+      - --cache=true
+      - --cache-ttl=48h
+    waitFor: ['-']
+  - name: 'gcr.io/kaniko-project/executor:latest'
+    args:
+      - --destination=us-central1-docker.pkg.dev/$PROJECT_ID/images/op-batcher:$_TAG
+      - --dockerfile=./op-batcher/Dockerfile
+      - --cache=true
+      - --cache-ttl=48h
+    waitFor: ['-']
+  - name: 'gcr.io/kaniko-project/executor:latest'
+    args:
+      - --destination=us-central1-docker.pkg.dev/$PROJECT_ID/images/op-proposer:$_TAG
+      - --dockerfile=./op-proposer/Dockerfile
+      - --cache=true
+      - --cache-ttl=48h
+    waitFor: ['-']
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