Adapter error translation

[bretambrose]

• Adds best effort translation from mqtt5 to mqtt311 error codes. This makes it much more likely that changing from the 3 client to the 5 client via the adapter does not confuse users with new error codes.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

Codecov Report

Patch coverage: 81.60% and project coverage change: -0.07 ⚠️

Comparison is base (34d265b) 82.04% compared to head (2e366c1) 81.97%.

Additional details and impacted files

@@                  Coverage Diff                  @@
##           AdapterResubStats     #307      +/-   ##
=====================================================
- Coverage              82.04%   81.97%   -0.07%     
=====================================================
  Files                     19       19              
  Lines                   8448     8518      +70     
=====================================================
+ Hits                    6931     6983      +52     
- Misses                  1517     1535      +18     

Impacted Files	Coverage Δ
source/v5/mqtt3_to_mqtt5_adapter.c	78.31% <81.60%> (-0.28%)	⬇️

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