Add option to allow Lumberjack to own communicator

[gberg617]

Summary

• This PR is a feature
• This PR adds the ability for Lumberjack to directly own a Communicator object. When this case is true, Lumberjack will call delete on the communicator object when finalize() is called.

[rhornung67]

setCommunicator() method needs to be added. Also, should initialize() check to make sure it's not being called more than it should? @white238 any additional comments?

[gunney1]

Looks okay to me pending the comment of @white238 .

[gberg617]

To Address comments from @white238, the following were added to this PR:

1. Methods in Lumberjack to get and swap communicators, as well as a getter for the isCommunicatorOwned flag.
2. isInitialized flag added to enforce initialize() to be called only once per Lumberjack instance.
3. Unit tests to check correct behavior for swapping owned and non-owned communicators in Lumberjack
4. Documentation
5. Release notes

[bmhan12]

4. Documentation

👍
Updated documentation for this PR can be found here: https://axom.readthedocs.io/en/feature-bergel1-lumberjack_set_communicator/axom/lumberjack/docs/sphinx/lumberjack_class.html