Add Code Style Settings for SQL Formatter

[xterao]

Enable customization of SQL formatting behavior through IntelliJ's settings UI, allowing users to configure style preferences for specific SQL constructs.

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Features

• Indentation and spacing controls
  Allow users to define:

  • Number of spaces per indent
  • Whether to align keywords (e.g., AND, OR, JOIN)
  • Space before/after parentheses or commas

• Line break rules
  Let users customize line-break behavior for:

  • SELECT columns
  • VALUES clauses
  • ON, WHERE, JOIN, RETURNING blocks

• Keyword and function list customization
  Users can specify:

  • Keywords to be treated with special formatting
  • Custom SQL functions to recognize for formatting consistency (e.g., user-defined functions)

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Integration

Settings will be available via:
Preferences > Editor > Code Style > SQL (Custom Dialect)

These options give developers flexibility to align formatting with project-specific conventions or personal preferences.