Organize backend into product executable and shared Go modules

backend/shared/database/record/storable.go

@@ -0,0 +1,10 @@
+package storable
+
+import "go.mongodb.org/mongo-driver/v2/bson"
+
+type Storable interface {
+	GetID() *bson.ObjectID
+	SetID(objID bson.ObjectID)
+	Update()
+	Collection() string
+}