Add regional leaderboard beta opt-in (#305)

db/migrate/20250611070646_add_scope_to_leaderboards.rb

@@ -0,0 +1,5 @@
+class AddScopeToLeaderboards < ActiveRecord::Migration[8.0]
+  def change
+    add_column :leaderboards, :scope, :string
+  end
+end

db/migrate/20250611071124_remove_scope_from_leaderboards.rb

@@ -0,0 +1,5 @@
+class RemoveScopeFromLeaderboards < ActiveRecord::Migration[8.0]
+  def change
+    remove_column :leaderboards, :scope, :string
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[8.0].define(version: 2025_06_11_062456) do
+ActiveRecord::Schema[8.0].define(version: 2025_06_11_071124) do
   create_schema "pganalyze"
 
   # These are extensions that must be enabled in order to support this database