Now Igniter is able to exempt apps in two ways: Block mode and allow mode.
While in block mode, checked applications are not allowed to go through proxy.
In allow mode, only checked applications are allowed to go through proxy.
Also remove the code that is related to external exempt application list configuration. As the setting of exempting app is simplified, I think it is unnecessary to migrate external configuration.
Now Igniter is able to exempt apps in two ways: Block mode and allow mode. While in block mode, checked applications are not allowed to go through proxy. In allow mode, only checked applications are allowed to go through proxy.
Also remove the code that is related to external exempt application list configuration. As the setting of exempting app is simplified, I think it is unnecessary to migrate external configuration.