[Admin] Add new migrations and validations in core to support new admin Spree::Role interface

core/app/models/spree/role.rb

@@ -5,7 +5,7 @@ class Role < Spree::Base
     has_many :role_users, class_name: "Spree::RoleUser", dependent: :destroy
     has_many :users, through: :role_users
 
-    validates_uniqueness_of :name, case_sensitive: true
+    validates :name, presence: true, uniqueness: { case_sensitive: true, allow_blank: true }
 
     def admin?
       name == "admin"

core/db/migrate/20240821173254_create_spree_permission_sets_in_core.rb

@@ -0,0 +1,9 @@
+class CreateSpreePermissionSetsInCore < ActiveRecord::Migration[7.0]
+  def change
+    create_table :spree_permission_sets, if_not_exists: true do |t|
+      t.string :name
+      t.string :set
+      t.timestamps null: false
+    end
+  end
+end

core/db/migrate/20240821173341_create_spree_roles_permissions_in_core.rb

@@ -0,0 +1,9 @@
+class CreateSpreeRolesPermissionsInCore < ActiveRecord::Migration[7.0]
+  def change
+    create_table :spree_role_permissions, if_not_exists: true do |t|
+      t.references :role
+      t.references :permission_set
+      t.timestamps null: false
+    end
+  end
+end

core/db/migrate/20240821173641_add_description_to_spree_roles.rb

@@ -0,0 +1,5 @@
+class AddDescriptionToSpreeRoles < ActiveRecord::Migration[7.0]
+  def change
+    add_column :spree_roles, :description, :text
+  end
+end