feat: couchbase integration (#6165)

Co-authored-by: crazywoola <427733928@qq.com>
Co-authored-by: Elliot Scribner <elliot.scribner@couchbase.com>
Co-authored-by: crazywoola <100913391+crazywoola@users.noreply.github.com>
Co-authored-by: Bowen Liang <bowenliang@apache.org>

api/controllers/console/datasets/datasets.py

@@ -640,6 +640,7 @@ class DatasetRetrievalSettingApi(Resource):
                 | VectorType.ELASTICSEARCH
                 | VectorType.PGVECTOR
                 | VectorType.TIDB_ON_QDRANT
+                | VectorType.COUCHBASE
             ):
                 return {
                     "retrieval_method": [
@@ -678,6 +679,7 @@ class DatasetRetrievalSettingMockApi(Resource):
                 | VectorType.MYSCALE
                 | VectorType.ORACLE
                 | VectorType.ELASTICSEARCH
+                | VectorType.COUCHBASE
                 | VectorType.PGVECTOR
             ):
                 return {