Nested routes and database changes that are required

Basic home screen
Model and controller tests coming along

db/migrate/20230621060115_add_domain_id_to_virtuals.rb

@@ -0,0 +1,8 @@
+class AddDomainIdToVirtuals < ActiveRecord::Migration[7.0]
+  def change
+    add_column :virtuals, :domain_id, :integer
+    add_column :credentials, :domain_id, :integer
+    add_index :virtuals, :domain_id
+    add_index :credentials, :domain_id
+  end
+end