implemented team create method

models/teams_create.go

@@ -0,0 +1,19 @@
+package models
+
+func (t *Team) Create(doer *User, _ int64) (err error) {
+	// Check if we have a name
+	if t.Name == "" {
+		return ErrTeamNameCannotBeEmpty{}
+	}
+
+	// Set the id to 0, otherwise the creation fails because of double keys
+	t.CreatedByID = doer.ID
+	t.CreatedBy = doer
+
+	_, err = x.Insert(t)
+	if err != nil {
+		return
+	}
+
+	return
+}