Fixed `KdocComments` and `KdocFormatting`

[DrAlexD]

What's done:

• Made refactoring in KdocComments.
• Added fix test for case when there is class description and some properties in class KDoc at the same time.
• Fixed bug in KdocFormatting for case when @property and @constructor basic tags haven't empty line before them.
• Modified fix test for case when there is class description before @property tag.
• Added smoke test for class KDoc. Currently disabled due to #1889.

Closes #1884

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 94.11765% with 3 lines in your changes missing coverage. Please review.

Project coverage is 76.82%. Comparing base (f63b045) to head (24166ca).

Files	Patch %	Lines
...diktat/ruleset/rules/chapter2/kdoc/KdocComments.kt	94.59%	0 Missing and 2 partials :warning:
...ktat/ruleset/rules/chapter2/kdoc/KdocFormatting.kt	85.71%	0 Missing and 1 partial :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1892 +/- ## ============================================ + Coverage 76.79% 76.82% +0.03% + Complexity 2492 2476 -16 ============================================ Files 134 134 Lines 7898 7883 -15 Branches 2240 2230 -10 ============================================ - Hits 6065 6056 -9 + Misses 828 826 -2 + Partials 1005 1001 -4 ```

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[github-actions[bot]]

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

  167 files  ±0    167 suites  ±0   7m 19s :stopwatch: -39s 1 449 tests +3  1 430 :white_check_mark: +1  19 :zzz: +2  0 :x: ±0  2 829 runs  +3  2 810 :white_check_mark: +1  19 :zzz: +2  0 :x: ±0 

Results for commit 24166cad. ± Comparison against base commit f63b045a.

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

[github-actions[bot]]

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

  167 files  ±0    167 suites  ±0   2m 49s :stopwatch: -54s 1 449 tests +3  1 408 :white_check_mark: +1  41 :zzz: +2  0 :x: ±0  2 829 runs  +3  2 788 :white_check_mark: +1  41 :zzz: +2  0 :x: ±0 

Results for commit 24166cad. ± Comparison against base commit f63b045a.

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