Add support for Kotlin JSR223 scripts (#2898)

* Add support for Kotlin JSR223 scripts

* Add required Kotlin dependencies into the `spring-integration-scripting`
module
* Introduce `KotlinScriptExecutor` to interact with the
`KotlinJsr223JvmLocalScriptEngineFactory` directly since there is no
`META-INF/services/javax.script.ScriptEngineFactory` file in the Kotlin
* Also set an `idea.use.native.fs.for.win` system property to `false` in
this class to disable check for native support on Windows.
(Might be removed in future Kotlin versions)
* Move `ScriptParser.getLanguageFromFileExtension()` logic into the
`ScriptExecutorFactory.deriveLanguageFromFileExtension()` since the same
one must be applied in the `DslScriptExecutingMessageProcessor`, too.
* Modify tests to reflect Kotlin support
* Fix some test scripts to their official extensions

* * Add JavaDocs
* Polishing according Sonar objections

spring-integration-scripting/src/test/resources/scripts/TestFilterScript.groovy

@@ -1 +0,0 @@
-headers.type == 'good'

spring-integration-scripting/src/test/resources/scripts/TestFilterScript.kts

@@ -0,0 +1 @@
+(bindings["headers"] as Map<String, *>)["type"] == "good"