Added users support

db/migrate/20250731113948_create_users.rb

@@ -0,0 +1,14 @@
+class CreateUsers < ActiveRecord::Migration[7.1]
+  def change
+    create_table :users do |t|
+      t.string :username
+      t.string :email
+      t.string :password_digest
+      t.references :company, null: false, foreign_key: true
+
+      t.timestamps
+    end
+    add_index :users, :username, unique: true
+    add_index :users, :email, unique: true
+  end
+end

db/migrate/20250731114403_add_email_to_users.rb

@@ -0,0 +1,6 @@
+class AddEmailToUsers < ActiveRecord::Migration[7.1]
+  def change
+    add_column :users, :email, :string
+    add_index :users, :email, unique: true
+  end
+end