[MHV 66349] created tooltip migration, and added table to database schema (#20938)

* [MHV 66349] created migration, and ran rails db:migrate to add table to database schema.

* [MHV 66349] explicitly specify user_accounts table in tooltips migration foreign key.

Author: robertbylight

db/migrate/20250207083950_create_tooltips.rb

@@ -0,0 +1,13 @@
+class CreateTooltips < ActiveRecord::Migration[7.2]
+  def change
+    create_table :tooltips, id: :uuid do |t|
+      t.references :user_account, null: false, foreign_key: { to_table: :user_accounts }, type: :uuid
+      t.string :tooltip_name, null: false
+      t.datetime :last_signed_in, null: false
+      t.integer :counter, default: 0
+      t.boolean :hidden, default: false
+      t.timestamps
+    end
+    add_index :tooltips, [:user_account_id, :tooltip_name], unique: true
+  end
+end