Support virtual path in DiktatProcessor

[nulls]

What's done:

• support virtual path

It's part of #1817

[codecov[bot]]

Codecov Report

Attention: 12 lines in your changes are missing coverage. Please review.

Comparison is base (b3cd098) 78.40% compared to head (16bb770) 78.35%.

Files	Patch %	Lines
...urtool/diktat/ktlint/DiktatProcessorFactoryImpl.kt	0.00%	9 Missing :warning:
...otlin/com/saveourtool/diktat/ktlint/KtLintUtils.kt	0.00%	3 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1874 +/- ## ============================================ - Coverage 78.40% 78.35% -0.06% Complexity 2465 2465 ============================================ Files 134 134 Lines 8697 8703 +6 Branches 2200 2203 +3 ============================================ Hits 6819 6819 - Misses 899 905 +6 Partials 979 979 ```

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[github-actions[bot]]

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

   166 files  ±0     166 suites  ±0   5m 5s :stopwatch: - 3m 56s 1 426 tests ±0  1 388 :heavy_check_mark: ±0  38 :zzz: ±0  0 :x: ±0  2 805 runs  ±0  2 767 :heavy_check_mark: ±0  38 :zzz: ±0  0 :x: ±0 

Results for commit 16bb7703. ± Comparison against base commit b3cd098d.

[github-actions[bot]]

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

   166 files  ±0     166 suites  ±0   7m 11s :stopwatch: -11s 1 426 tests ±0  1 409 :heavy_check_mark: ±0  17 :zzz: ±0  0 :x: ±0  2 805 runs  ±0  2 788 :heavy_check_mark: ±0  17 :zzz: ±0  0 :x: ±0 

Results for commit 16bb7703. ± Comparison against base commit b3cd098d.