feat(aliases)!: Merge AvroAliases annotation to AvroAlias

- Now, to have multiple aliases, just annotate like `@AvroAlias("alias1", "alias2", "alias3")` as it is now a vararg parameter
- updated to kotlin 1.9 to have @repeatable working

build.gradle.kts

@@ -49,8 +49,8 @@ dependencies {
 
 tasks.withType<KotlinCompile>().configureEach {
    kotlinOptions.jvmTarget = "1.8"
-   kotlinOptions.apiVersion = "1.5"
-   kotlinOptions.languageVersion = "1.5"   
+   kotlinOptions.apiVersion = "1.9"
+   kotlinOptions.languageVersion = "1.9"
    kotlinOptions.freeCompilerArgs += "-opt-in=kotlin.RequiresOptIn"
 }
 java {

buildSrc/src/main/kotlin/Libs.kt

@@ -1,6 +1,6 @@
 object Libs {
 
-   const val kotlinVersion = "1.8.20"
+   const val kotlinVersion = "1.9.10"
    const val dokkaVersion = "1.8.10"
    const val kotestGradlePlugin = "0.4.10"
    const val versionsPlugin = "0.46.0"
@@ -15,7 +15,7 @@ object Libs {
    }
 
    object Kotlinx {
-      private const val version = "1.5.0"
+      private const val version = "1.6.0"
       const val serializationCore = "org.jetbrains.kotlinx:kotlinx-serialization-core:$version"
       const val serializationJson = "org.jetbrains.kotlinx:kotlinx-serialization-json:$version"
    }

src/main/kotlin/com/github/avrokotlin/avro4k/AnnotationExtractor.kt

@@ -2,6 +2,7 @@ package com.github.avrokotlin.avro4k
 
 import kotlinx.serialization.ExperimentalSerializationApi
 import kotlinx.serialization.descriptors.SerialDescriptor
+
 @ExperimentalSerializationApi
 class AnnotationExtractor(private val annotations: List<Annotation>) {
 
@@ -19,12 +20,7 @@ class AnnotationExtractor(private val annotations: List<Annotation>) {
    fun name(): String? = annotations.filterIsInstance<AvroName>().firstOrNull()?.value
    fun valueType(): Boolean = annotations.filterIsInstance<AvroInline>().isNotEmpty()
    fun doc(): String? = annotations.filterIsInstance<AvroDoc>().firstOrNull()?.value
-   fun aliases(): List<String> =
-      if(annotations.any { it is AvroAlias }){
-         annotations.filterIsInstance<AvroAlias>().map { it.value }
-      }else{
-         annotations.filterIsInstance<AvroAliases>().flatMap { it.value.toList() }
-      }
+   fun aliases(): List<String> = annotations.filterIsInstance<AvroAlias>().flatMap { it.value.asList() }
    fun props(): List<Pair<String, String>> = annotations.filterIsInstance<AvroProp>().map { it.key to it.value }
    fun default(): String? = annotations.filterIsInstance<AvroDefault>().firstOrNull()?.value
    fun enumDefault(): String? = annotations.filterIsInstance<AvroEnumDefault>().firstOrNull()?.value

src/main/kotlin/com/github/avrokotlin/avro4k/annotations.kt

@@ -28,13 +28,10 @@ annotation class AvroInline
 @Target(AnnotationTarget.PROPERTY, AnnotationTarget.CLASS)
 annotation class AvroDoc(val value: String)
 
+@Repeatable
 @SerialInfo
 @Target(AnnotationTarget.PROPERTY, AnnotationTarget.CLASS)
-annotation class AvroAlias(val value: String)
-
-@SerialInfo
-@Target(AnnotationTarget.PROPERTY, AnnotationTarget.CLASS)
-annotation class AvroAliases(val value: Array<String>)
+annotation class AvroAlias(vararg val value: String)
 
 /**
  * [AvroFixed] overrides the schema type for a field or a value class

src/test/kotlin/com/github/avrokotlin/avro4k/schema/AvroAliasSchemaTest.kt

@@ -2,7 +2,6 @@ package com.github.avrokotlin.avro4k.schema
 
 import com.github.avrokotlin.avro4k.Avro
 import com.github.avrokotlin.avro4k.AvroAlias
-import com.github.avrokotlin.avro4k.AvroAliases
 import io.kotest.matchers.shouldBe
 import io.kotest.core.spec.style.WordSpec
 import kotlinx.serialization.Serializable
@@ -39,15 +38,16 @@ class AvroAliasSchemaTest : WordSpec({
 }) {
     @Serializable
     @AvroAlias("queen")
+    @AvroAlias("ledzep")
     data class TypeAnnotated(val str: String)
 
-    @AvroAliases(["queen","ledzep"])
+    @AvroAlias("queen", "ledzep")
     @Serializable
     data class TypeAliasAnnotated(val str: String)
 
     @Serializable
     data class FieldAnnotated(@AvroAlias("cold") val str: String, @AvroAlias("kate") val long: Long, val int: Int)
 
     @Serializable
-    data class FieldAliasAnnotated(@AvroAliases(["queen","ledzep"]) val str: String)
+    data class FieldAliasAnnotated(@AvroAlias("queen", "ledzep") val str: String)
 }

src/test/kotlin/com/github/avrokotlin/avro4k/schema/EnumSchemaTest.kt

@@ -1,7 +1,7 @@
 package com.github.avrokotlin.avro4k.schema
 
 import com.github.avrokotlin.avro4k.Avro
-import com.github.avrokotlin.avro4k.AvroAliases
+import com.github.avrokotlin.avro4k.AvroAlias
 import com.github.avrokotlin.avro4k.AvroDefault
 import com.github.avrokotlin.avro4k.AvroDoc
 import com.github.avrokotlin.avro4k.AvroEnumDefault
@@ -89,7 +89,7 @@ enum class Wine {
 }
 
 @Serializable
-@AvroAliases(["MySuit"])
+@AvroAlias("MySuit")
 @AvroDoc("documentation")
 enum class Suit {
    SPADES, HEARTS, DIAMONDS, CLUBS;

src/test/resources/aliases_on_types.json

@@ -3,7 +3,8 @@
   "name": "TypeAnnotated",
   "namespace": "com.github.avrokotlin.avro4k.schema.AvroAliasSchemaTest",
   "aliases": [
-    "queen"
+    "queen",
+    "ledzep"
   ],
   "fields": [
     {