[#1289] Revisit API of "org.eclipse.passage.lic.hc" bundle

[eparovyshnaya]

• impl* packages gone to provisional API
• two classes from public package gone to internal package provisional API

Closes #1289

[ruspl-afed]

LGTM

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 33.71%. Comparing base (7b5b7dd) to head (03c891b).

Files	Patch %	Lines
...pse/passage/lic/internal/hc/i18n/MineMessages.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #1339   +/-   ##
=========================================
  Coverage     33.71%   33.71%           
  Complexity      394      394           
=========================================
  Files          1190     1190           
  Lines         25996    25996           
  Branches       1595     1595           
=========================================
+ Hits           8764     8765    +1     
+ Misses        16708    16707    -1     
  Partials        524      524           

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