Fat jar for gradle plugin

[nulls]

What's done:

• configured shadow for gradle plugin

It closes #1787

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (7b7d2b6) 78.41% compared to head (bf7fbde) 78.41%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1794 +/- ## ========================================= Coverage 78.41% 78.41% Complexity 2420 2420 ========================================= Files 126 126 Lines 8466 8466 Branches 2147 2147 ========================================= Hits 6639 6639 Misses 867 867 Partials 960 960 ```

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[github-actions[bot]]

JUnit Tests (macOS, EnricoMi/publish-unit-test-result-action@v2)

   165 files  ±0     165 suites  ±0   5m 27s :stopwatch: -14s 1 395 tests ±0  1 359 :heavy_check_mark: ±0  36 :zzz: ±0  0 :x: ±0  2 774 runs  ±0  2 738 :heavy_check_mark: ±0  36 :zzz: ±0  0 :x: ±0 

Results for commit bf7fbde8. ± Comparison against base commit 7b7d2b6f.

:recycle: This comment has been updated with latest results.

[github-actions[bot]]

JUnit Tests (Windows, EnricoMi/publish-unit-test-result-action@v2)

   165 files  ±0     165 suites  ±0   7m 10s :stopwatch: - 5m 56s 1 395 tests ±0  1 378 :heavy_check_mark: ±0  17 :zzz: ±0  0 :x: ±0  2 774 runs  ±0  2 757 :heavy_check_mark: ±0  17 :zzz: ±0  0 :x: ±0 

Results for commit bf7fbde8. ± Comparison against base commit 7b7d2b6f.

:recycle: This comment has been updated with latest results.