feat: property value as Union type

priv/repo/migrations/20250521234537_initial_migration.exs

@@ -21,7 +21,7 @@ defmodule Mv.Repo.Migrations.InitialMigration do
 
     create table(:properties, primary_key: false) do
       add :id, :uuid, null: false, default: fragment("gen_random_uuid()"), primary_key: true
-      add :value, :text
+      add :value, :map
       add :member_id, :uuid
       add :property_type_id, :uuid
     end