Improved command and query handling

[alanbem]

• check if aggregate supports given command
• check if listener supports given query

[codecov]

Codecov Report

Attention: Patch coverage is 33.33333% with 4 lines in your changes missing coverage. Please review.

Project coverage is 99.75%. Comparing base (8ba1a1f) to head (cf944ae).

Files with missing lines	Patch %	Lines
src/Domain/Command/Handling.php	33.33%	2 Missing ⚠️
src/Domain/Query/Handling.php	33.33%	2 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #138      +/-   ##
============================================
- Coverage     99.89%   99.75%   -0.15%     
- Complexity     1072     1078       +6     
============================================
  Files           119      119              
  Lines          2837     2843       +6     
============================================
+ Hits           2834     2836       +2     
- Misses            3        7       +4     

Files with missing lines	Coverage Δ
src/Domain/Command/Handling.php	94.59% <33.33%> (-5.41%)	⬇️
src/Domain/Query/Handling.php	93.33% <33.33%> (-6.67%)	⬇️

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