Added Inline Type Alias refactoring

[oleg68]

Summary

• add Inline Type Alias to the existing Ctrl+Alt+N / Refactor → Inline flow
• reuse IntelliJ IDEA K2 type-alias replacement semantics while preserving NetBeans preview, transactional persistence, and refactoring undo
• document F5.1 coverage and add declaration, usage, generic-substitution, and action-routing tests

Validation

• mvn test -Dtest=KaInlineTypeAliasTest,KotlinInlineVariableActionTest,RefactoringCoverageBaselineTest -Dsurefire.failIfNoSpecifiedTests=false
• mvn clean test
• mvn clean package -DskipTests
• Manual NetBeans verification: all occurrences/delete declaration, one occurrence, keep declaration, generic substitutions, Refactor → Undo Last Refactoring, and editor Ctrl+Z

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