Create DB Alias type to reference objects with a custom label/name

Author: CarsonF

dbschema/alias.esdl

@@ -0,0 +1,10 @@
+module default {
+  type Alias {
+    required name: str {
+      constraint exclusive;
+    };
+    required target: Object {
+      on target delete delete source;
+    };
+  }
+}

dbschema/migrations/00051.edgeql

@@ -0,0 +1,12 @@
+CREATE MIGRATION m1tgd6yl63z2bp7ahtbi7sidb5gfl7mjs47ooqfbnuleffpap3auua
+    ONTO m1vlgekf4eyzweb6xmldmxwzohoh7xbrre6fbc7e2d3t7q7ry3qobq
+{
+  CREATE TYPE default::Alias {
+      CREATE REQUIRED LINK target: std::Object {
+          ON TARGET DELETE DELETE SOURCE;
+      };
+      CREATE REQUIRED PROPERTY name: std::str {
+          CREATE CONSTRAINT std::exclusive;
+      };
+  };
+};