enhance: support create collection with description(#40022) (#40023)

related: #40022

Signed-off-by: MrPresent-Han <chun.han@gmail.com>
Co-authored-by: MrPresent-Han <chun.han@gmail.com>

internal/distributed/proxy/httpserver/handler_v2.go

@@ -1410,6 +1410,7 @@ func (h *HandlersV2) createCollection(ctx context.Context, c *gin.Context, anyRe
 				},
 			},
 			EnableDynamicField: enableDynamic,
+			Description:        httpReq.Description,
 		})
 	} else {
 		collSchema := schemapb.CollectionSchema{
@@ -1418,6 +1419,7 @@ func (h *HandlersV2) createCollection(ctx context.Context, c *gin.Context, anyRe
 			Fields:             []*schemapb.FieldSchema{},
 			Functions:          []*schemapb.FunctionSchema{},
 			EnableDynamicField: httpReq.Schema.EnableDynamicField,
+			Description:        httpReq.Description,
 		}
 
 		allOutputFields := []string{}

internal/distributed/proxy/httpserver/request_v2.go

@@ -505,6 +505,7 @@ type CollectionReq struct {
 	Schema           CollectionSchema       `json:"schema"`
 	IndexParams      []IndexParam           `json:"indexParams"`
 	Params           map[string]interface{} `json:"params"`
+	Description      string                 `json:"description"`
 }
 
 func (req *CollectionReq) GetDbName() string { return req.DbName }