[#1191] "Import Licenses" wizard should support import from archive

[eparovyshnaya]

ImportLicenseDialog is extended with proper hooks, as well as all the chain of inclusions that make your custom dialog work.

• construct you verion of ImportLicenseDialog with custom LicenseFilesControl implementation (read license files from archive, for instance).
• supply it to LicenseStatusDialog by defining your own version of BaseLicenseStatusDialog
• supply your version of BaseLicenseStatusDialog to your version of BaseEquinoxPassageUI
• which you can directly invoke from your own version of E4LicensingAddon or other places

Closes #1191

[codecov[bot]]

Codecov Report

Attention: 159 lines in your changes are missing coverage. Please review.

Comparison is base (ed1229b) 33.75% compared to head (470e75b) 33.74%.

Files	Patch %	Lines
...ace/dialogs/licensing/BaseLicenseStatusDialog.java	0.00%	73 Missing :warning:
...clipse/passage/lic/jface/BaseEquinoxPassageUI.java	0.00%	29 Missing :warning:
...l/jface/dialogs/licensing/FromLocalFileSystem.java	0.00%	24 Missing :warning:
...l/jface/dialogs/licensing/ImportLicenseDialog.java	0.00%	14 Missing :warning:
...nternal/jface/dialogs/licensing/GoodIntention.java	0.00%	5 Missing :warning:
...l/jface/dialogs/licensing/LicenseStatusDialog.java	0.00%	5 Missing :warning:
...c/internal/jface/dialogs/licensing/LicenseSet.java	0.00%	4 Missing :warning:
...ic/internal/base/conditions/LicenseConditions.java	0.00%	2 Missing :warning:
...rg/eclipse/passage/lic/jface/EquinoxPassageUI.java	0.00%	2 Missing :warning:
...e/dialogs/licensing/AllConditionsFromLicenses.java	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1285 +/- ## ============================================ - Coverage 33.75% 33.74% -0.02% Complexity 391 391 ============================================ Files 1181 1184 +3 Lines 25864 25883 +19 Branches 1591 1590 -1 ============================================ + Hits 8731 8733 +2 - Misses 16612 16630 +18 + Partials 521 520 -1 ```

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