Fix subquery formatting under conditional directives

[xterao]

Problem

When writing a subquery under a conditional directive, the indentation was less than expected. This was due to not properly considering the parent-child relationship of conditional directives.

Solution

This fix ensures that when a block immediately follows a conditional directive and is not the directive itself, the indentation calculation also takes into account the text length of the parent block of the conditional directive. This results in correct indentation for subqueries under conditional directives.

[xterao]

Merge after #404

[Copilot]

Pull Request Overview

This PR fixes subquery formatting under conditional directives by improving indentation calculation to properly consider parent-child relationships between conditional directives and subsequent blocks.

• Updates conditional directive handling to calculate proper indentation for blocks following directives
• Refactors keyword group block organization by moving option-related blocks to a dedicated package
• Adds comprehensive test coverage for various conditional directive scenarios

Reviewed Changes

Copilot reviewed 32 out of 32 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
SqlElConditionLoopCommentBlock.kt	Core logic changes for conditional directive indentation calculation
SqlSubQueryGroupBlock.kt	Updates subquery indentation logic for conditional directive context
SqlBlockGenerator.kt	Adds support for new IN and WHERE group blocks
SqlInGroupBlock.kt	New block type for handling IN keyword formatting
SqlWhereGroupBlock.kt	New block type for WHERE clause formatting
Package refactoring files	Moves option keyword blocks to dedicated package structure
Test files	Comprehensive test data for conditional directive formatting scenarios

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}