feat: refactor model manager

* chore: mv model icon
* fix: model icon
* fix: model icon
* feat: refactor model manager
* fix: model icon
* fix: model icon
* feat: refactor model manager

See merge request: !905

backend/infra/contract/modelmgr/modelmgr.go

@@ -0,0 +1,27 @@
+package modelmgr
+
+import (
+	"context"
+)
+
+type Manager interface {
+	ListModel(ctx context.Context, req *ListModelRequest) (*ListModelResponse, error)
+	MGetModelByID(ctx context.Context, req *MGetModelRequest) ([]*Model, error)
+}
+
+type ListModelRequest struct {
+	FuzzyModelName *string
+	Status         []ModelStatus // default is default and in_use status
+	Limit          int
+	Cursor         *string
+}
+
+type ListModelResponse struct {
+	ModelList  []*Model
+	HasMore    bool
+	NextCursor *string
+}
+
+type MGetModelRequest struct {
+	IDs []int64
+}