feat(BE): approval_workflow, adjusment project_flocks, common, and migration

internal/modules/production/project_flocks/validations/projectflock.validation.go

@@ -30,3 +30,8 @@ type Query struct {
 	Period     int    `query:"period" validate:"omitempty,number,gt=0"`
 	KandangIds []uint `query:"kandang_id" validate:"omitempty,dive,gt=0"`
 }
+
+type Approve struct {
+	Action string  `json:"action" validate:"required_strict"`
+	Notes  *string `json:"notes,omitempty" validate:"omitempty,max=500"`
+}