Add nullable set test

Author: lauzadis

hll/dynamodb-mapper/dynamodb-mapper-schema-generator-plugin/src/test/resources/standard-item-converters/src/Sets.kt

@@ -28,6 +28,7 @@ public data class Sets(
     var setUInt: Set<UInt>,
     var setULong: Set<ULong>,
     var setUShort: Set<UShort>,
+    var nullableSet: Set<String>?,
 ) {
     override fun equals(other: Any?): Boolean {
         if (this === other) return true
@@ -49,6 +50,8 @@ public data class Sets(
         if (setULong != other.setULong) return false
         if (setUShort != other.setUShort) return false
 
+        if (nullableSet != other.nullableSet) return false
+
         return true
     }
 }

hll/dynamodb-mapper/dynamodb-mapper-schema-generator-plugin/src/test/resources/standard-item-converters/test/SetsTest.kt

@@ -28,6 +28,7 @@ public class SetsTest {
             setUInt = setOf(100u, 200u, 300u),
             setULong = setOf(1000uL, 2000uL, 3000uL),
             setUShort = setOf(1000u.toUShort(), 2000u.toUShort(), 3000u.toUShort()),
+            nullableSet = null,
         )
 
         val item = SetsConverter.convertTo(sets)