feat: add gt lt for string and allow to search 'like value' with case…

[reifocS]

… sensitive

PR Checklist

Please check if your PR fulfills the following requirements:

• [x] The commit message follows our guidelines: https://github.com/sipios/spring-search//blob/main/CONTRIBUTING.md##Commit-messages
• [x] Tests for the changes have been added (for bug fixes / features)
• [ ] Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• [ ] Bugfix
• [x] Feature
• [ ] Code style update (formatting, local variables)
• [ ] Refactoring (no functional changes, no api changes)
• [ ] Build related changes
• [ ] CI related changes
• [ ] Documentation content changes
• [ ] Other... Please describe:

What is the current behavior?

GT, LT and BETWEEN does not work for string values.
It is not possible to search with * wildcard and casesentitive flag to true Issue Number: N/A

What is the new behavior?

User can now search string value using these operators. He can also search with * with and case sensitivity enabled

Does this PR introduce a breaking change?

• [ ] Yes
• [x] No

Other information

[codecov[bot]]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (bc92dc8) 83.55% compared to head (bd6956c) 83.00%. Report is 6 commits behind head on master.

Files	Patch %	Lines
...kotlin/com/sipios/springsearch/QueryVisitorImpl.kt	75.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #81 +/- ## ============================================ - Coverage 83.55% 83.00% -0.56% - Complexity 115 123 +8 ============================================ Files 22 22 Lines 298 306 +8 Branches 41 43 +2 ============================================ + Hits 249 254 +5 - Misses 23 28 +5 + Partials 26 24 -2 ```

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