Implement script dependencies resolution directly from classloader

#KT-27956 fixed

libraries/scripting/jvm/src/kotlin/script/experimental/jvm/impl/BridgeDependenciesResolver.kt

@@ -97,7 +97,7 @@ internal fun ScriptContents.toScriptSource(): SourceCode = when {
     else -> throw IllegalArgumentException("Unable to convert script contents $this into script source")
 }
 
-fun List<ScriptDependency>?.toClassPathOrEmpty() = this?.flatMap { (it as JvmDependency).classpath } ?: emptyList()
+fun List<ScriptDependency>?.toClassPathOrEmpty() = this?.flatMap { (it as? JvmDependency)?.classpath ?: emptyList() } ?: emptyList()
 
 internal fun List<SourceCode>?.toFilesOrEmpty() = this?.map {
     val externalSource = it as? ExternalSourceCode

libraries/scripting/jvm/src/kotlin/script/experimental/jvm/jvmScriptCompilation.kt

@@ -19,6 +19,12 @@ data class JvmDependency(val classpath: List<File>) : ScriptDependency {
     companion object { private const val serialVersionUID: Long = 1L }
 }
 
+typealias ClassLoaderByConfiguration = (ScriptCompilationConfiguration) -> ClassLoader
+
+class JvmDependencyFromClassLoader(val classLoaderGetter: ClassLoaderByConfiguration) : ScriptDependency {
+    fun getClassLoader(configuration: ScriptCompilationConfiguration): ClassLoader = classLoaderGetter(configuration)
+}
+
 interface JvmScriptCompilationConfigurationKeys
 
 open class JvmScriptCompilationConfigurationBuilder : PropertiesCollection.Builder(), JvmScriptCompilationConfigurationKeys {