Add a way for JobExecution storage to be setup before used

[yann-eugone]

Some JobExecution storage might require to be setup before used
For instance storing JobExecution in an SQL table, require the table to exists
That storage was using it's own createSchema method for that purpose
But other storages might want to do the same, so I introduced an interface

This allows to have a common way to setup storages, and allows the existence of a symfony command to trigger the setup if required

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (9668e4d) 99.69% compared to head (3b0e44b) 99.70%.
Report is 1 commits behind head on 0.x.

Additional details and impacted files

@@            Coverage Diff            @@
##                0.x     #107   +/-   ##
=========================================
  Coverage     99.69%   99.70%           
- Complexity      916      921    +5     
=========================================
  Files           149      150    +1     
  Lines          2644     2670   +26     
=========================================
+ Hits           2636     2662   +26     
  Misses            8        8           

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