Enable vllm for CodeTrans (#1626)

Set vllm as default llm serving, and add related docker compose files, readmes, and test scripts.

Issue: https://github.com/opea-project/GenAIExamples/issues/1436

Signed-off-by: letonghan <letong.han@intel.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

CodeTrans/docker_image_build/build.yaml

@@ -23,6 +23,18 @@ services:
       dockerfile: comps/llms/src/text-generation/Dockerfile
     extends: codetrans
     image: ${REGISTRY:-opea}/llm-textgen:${TAG:-latest}
+  vllm:
+    build:
+      context: vllm
+      dockerfile: Dockerfile.cpu
+    extends: codetrans
+    image: ${REGISTRY:-opea}/vllm:${TAG:-latest}
+  vllm-gaudi:
+    build:
+      context: vllm-fork
+      dockerfile: Dockerfile.hpu
+    extends: codetrans
+    image: ${REGISTRY:-opea}/vllm-gaudi:${TAG:-latest}
   nginx:
     build:
       context: GenAIComps