Build Issue: add package name to Quality.kt

[triathematician]

Description

Add package declaration to https://github.com/aallam/openai-kotlin/blob/main/openai-core/src/commonMain/kotlin/com.aallam.openai.api/Quality.kt

Omitting this causes automatic module resolution to fail for openai-core-jvm, causing build issues:

[WARNING] Can't extract module name from openai-core-jvm-3.7.1.jar: QualityKt.class found in top-level directory (unnamed package not allowed in module)

Steps to Reproduce

Downstream libraries using openai-core-jvm and module-info.java.

Environment

• openai-kotlin version: 3.6.3+
• Kotlin version: 1.8.x

Additional Info

Add any other relevant context here.