feat: introduce feed management for individual and professor modules across frontend and backend services.

services/data-manager/model/feedModel.go

@@ -27,6 +27,8 @@ type Feed struct {
 	Created   types.DateTime `db:"created" json:"created"`
 	Updated   types.DateTime `db:"updated" json:"updated"`
 	Deleted   bool           `db:"deleted" json:"deleted"`
+	Type      string         `db:"type" json:"type"` // "prof" or "student"
+	User      string         `db:"user" json:"user"` // Relation to users table
 	core.BaseModel
 }