[PM-22097] Add Columns to Collections for Org User Default Collection (#5908)

* Adding columns and database migrations for organization DefaultUserCollection.

util/PostgresMigrations/Migrations/20250603133704_AddOrgUserDefaultCollection.cs

@@ -0,0 +1,38 @@
+using Microsoft.EntityFrameworkCore.Migrations;
+
+#nullable disable
+
+namespace Bit.PostgresMigrations.Migrations;
+
+/// <inheritdoc />
+public partial class AddOrgUserDefaultCollection : Migration
+{
+    /// <inheritdoc />
+    protected override void Up(MigrationBuilder migrationBuilder)
+    {
+        migrationBuilder.AddColumn<string>(
+            name: "DefaultUserCollectionEmail",
+            table: "Collection",
+            type: "text",
+            nullable: true);
+
+        migrationBuilder.AddColumn<int>(
+            name: "Type",
+            table: "Collection",
+            type: "integer",
+            nullable: false,
+            defaultValue: 0);
+    }
+
+    /// <inheritdoc />
+    protected override void Down(MigrationBuilder migrationBuilder)
+    {
+        migrationBuilder.DropColumn(
+            name: "DefaultUserCollectionEmail",
+            table: "Collection");
+
+        migrationBuilder.DropColumn(
+            name: "Type",
+            table: "Collection");
+    }
+}