Creating FedBN client and adding test

[emersodb]

PR Type

Feature

Short Description

Really small PR to add in a sanity check layer for FedBN clients. This allows us to ensure that someone wanting to use BN has a bit of a check on their definition of the parameter exchanger. FedBN really only differs from the Basic Client in a single way (uses a layer exchanger with exclusions), but we weren't really enforcing that anywhere and the example was just "doing so properly" so to speak. This PR just adds in a layer where, if the user wants to use a FedBN client, it checks that they have an exchanger of the correct type.

Tests Added

Test that the enforcement fails if the user does not use the right class for parameter exchange.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.86%. Comparing base (cf69aad) to head (3cdb1ff).
Report is 5 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #396      +/-   ##
==========================================
+ Coverage   76.84%   76.86%   +0.01%     
==========================================
  Files         155      156       +1     
  Lines        9464     9472       +8     
==========================================
+ Hits         7273     7281       +8     
  Misses       2191     2191              

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[fatemetkl]

LGTM! 🚀