feat: collection name everywhere (#310)

Co-authored-by: cachho <admin@ch-webdev.com>

embedchain/config/apps/CustomAppConfig.py

@@ -24,8 +24,8 @@ class CustomAppConfig(BaseAppConfig):
         host=None,
         port=None,
         id=None,
+        collection_name=None,
         provider: Providers = None,
-        model=None,
         open_source_app_config=None,
         deployment_name=None,
     ):
@@ -35,9 +35,10 @@ class CustomAppConfig(BaseAppConfig):
         :param embedding_fn: Optional. Embedding function to use.
         :param embedding_fn_model: Optional. Model name to use for embedding function.
         :param db: Optional. (Vector) database to use for embeddings.
-        :param id: Optional. ID of the app. Document metadata will have this id.
         :param host: Optional. Hostname for the database server.
         :param port: Optional. Port for the database server.
+        :param id: Optional. ID of the app. Document metadata will have this id.
+        :param collection_name: Optional. Collection name for the database.
         :param provider: Optional. (Providers): LLM Provider to use.
         :param open_source_app_config: Optional. Config instance needed for open source apps.
         """
@@ -58,6 +59,7 @@ class CustomAppConfig(BaseAppConfig):
             host=host,
             port=port,
             id=id,
+            collection_name=collection_name,
         )
 
     @staticmethod