Fixes #1756: Remove qd_node_type_t struct and replaced its callbacks …

[ganeshmurthy]

…with direct calls to AMQP functions

[kgiusti]

LGTM: minor formatting nit see inline

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 66.5%. Comparing base (745ca5b) to head (fdf7f5e).
Report is 35 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##            main   #1757     +/-   ##
=======================================
- Coverage   67.9%   66.5%   -1.5%     
=======================================
  Files        202     205      +3     
  Lines      47767   47998    +231     
  Branches    5184    5202     +18     
=======================================
- Hits       32457   31928    -529     
- Misses     13198   14105    +907     
+ Partials    2112    1965    -147     

Flag	Coverage Δ
pysystemtests	79.0% <ø> (-0.1%)	⬇️
systemtests	59.4% <100.0%> (-2.2%)	⬇️

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Components	Coverage Δ
unittests	66.5% <72.1%> (-1.5%)	⬇️
systemtests	66.5% <72.1%> (-1.5%)	⬇️

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