Improve prints

[Leo-Besancon]

• Clarifies debug prints for versioning stats
• Prints the final state hash after bootstrap on network restart, to easily compare the hashes and confirm successful bootstrap.

Tested in labnet with a network restart

[codecov]

Codecov Report

Attention: Patch coverage is 6.25000% with 15 lines in your changes are missing coverage. Please review.

Project coverage is 71.78%. Comparing base (a2d15b0) to head (2048ac9).

Files	Patch %	Lines
massa-node/src/main.rs	0.00%	13 Missing ⚠️
massa-versioning/src/versioning.rs	33.33%	2 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4650   +/-   ##
=======================================
  Coverage   71.78%   71.78%           
=======================================
  Files         291      291           
  Lines       51642    51642           
=======================================
  Hits        37069    37069           
  Misses      14573    14573           

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