Fix two issues:

[zhuoY121]

There are two issues when updating php version to php 8.2.

1. The creation of dynamic properties:

   • Error Message:
   • Deprecated: Creation of dynamic property Tsugi\Config\ConfigInfo::$slow_query is deprecated
   • Same error messages for $logout_return_url and $verifypeer
   • The solution is to add these fields to ConfigInfo.php
   • NOTE: I've included some basic comments while adding these fields in ConfigInfo. Feel free to enhance them further if needed.

2. Passing null to strlen():

   • Error Message:
   • Deprecated: strlen(): Passing null to parameter # 1 ($string) of type string is deprecated
   • The solution is to use !empty() instead of strlen() > 0 in the if statement.

[csev]

This looks great! Thanks for the fix.