[Compiler plugin] move ConvertApproximation

Author: koperagen

plugins/kotlin-dataframe/src/org/jetbrains/kotlinx/dataframe/annotations/Plugin.kt

@@ -8,8 +8,6 @@ import org.jetbrains.kotlinx.dataframe.plugin.type
 
 typealias TypeApproximation = org.jetbrains.kotlinx.dataframe.Marker
 
-class ConvertApproximation(val schema: PluginDataFrameSchema, val columns: List<List<String>>)
-
 class Add : AbstractSchemaModificationInterpreter() {
     val Arguments.receiver: PluginDataFrameSchema by dataFrame()
     val Arguments.name: String by string()

plugins/kotlin-dataframe/src/org/jetbrains/kotlinx/dataframe/plugin/convert.kt

@@ -9,7 +9,6 @@ import org.jetbrains.kotlinx.dataframe.KotlinTypeFacade
 import org.jetbrains.kotlinx.dataframe.annotations.AbstractInterpreter
 import org.jetbrains.kotlinx.dataframe.annotations.AbstractSchemaModificationInterpreter
 import org.jetbrains.kotlinx.dataframe.annotations.Arguments
-import org.jetbrains.kotlinx.dataframe.annotations.ConvertApproximation
 import org.jetbrains.kotlinx.dataframe.annotations.Present
 import org.jetbrains.kotlinx.dataframe.annotations.TypeApproximation
 import org.jetbrains.kotlinx.dataframe.api.Infer
@@ -33,6 +32,8 @@ class Convert2 : AbstractInterpreter<ConvertApproximation>() {
     }
 }
 
+class ConvertApproximation(val schema: PluginDataFrameSchema, val columns: List<List<String>>)
+
 internal class Convert6 : AbstractInterpreter<PluginDataFrameSchema>() {
     val Arguments.firstCol: String by string()
     val Arguments.cols: List<String> by varargString(defaultValue = Present(emptyList()))