[#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

[codecov[bot]]

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 :warning:

Additional details and impacted files

```diff @@ 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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