Add an option rename_redirect_back_or_to

Fix Sorcery#296

`redirect_back_or_to` defined by Rails 7 conflict by name with Sorcery's 'redirect_back_or_to'.
This commit adds an option to rename this method to 'redirect_to_before_login_path'.

ref: Sorcery#296 (comment)

lib/generators/sorcery/templates/initializer.rb

@@ -21,6 +21,15 @@
   #
   # config.save_return_to_url =
 
+  # Set whether to rename 'redirect_back_or_to' to 'redirect_to_before_login_path'.
+  # Rails 7 released a new method called 'redirect_back_or_to' as a replacement for 'redirect_back'.
+  # That may conflict with the method by the same name defined by Sorcery.
+  # If you set this option to true, Sorcery define a method called 'redirect_to_before_login_path' 
+  # in place of the soft-deprecated 'redirect_back_or_to'.
+  # Default: `false`
+  #
+  # config.rename_redirect_back_or_to =
+
   # Set domain option for cookies; Useful for remember_me submodule.
   # Default: `nil`
   #

lib/sorcery/controller/config.rb

@@ -20,6 +20,9 @@ class << self
         attr_accessor :after_logout
         attr_accessor :after_remember_me
 
+        # set whether to rename 'redirect_back_or_to' to 'redirect_to_before_login_path'.
+        attr_accessor :rename_redirect_back_or_to
+
         def init!
           @defaults = {
             :@user_class                           => nil,
@@ -32,7 +35,8 @@ def init!
             :@after_logout                         => Set.new,
             :@after_remember_me                    => Set.new,
             :@save_return_to_url                   => true,
-            :@cookie_domain                        => nil
+            :@cookie_domain                        => nil,
+            :@rename_redirect_back_or_to           => false
           }
         end