Add ApplicationContextManagerTls type

[rockfordlhotka]

There are some challenges with adapting existing apps to the new AsyncLocal approach for managing CSLA context (changed in #729). For example: MarimerLLC/cslaforum#849

To help provide an easy workaround for this, perhaps CSLA should have an ApplicationContextManagerTls type - the original implementation using TLS - as part of the framework. It wouldn't be the default, but it would be in the framework, making its use as easy as a config change during app startup.

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.