Add tests for script configuration machinery, namely ScriptTemplateProvider EP

Test highlighting and navigation depending on provided script definition

idea/testData/script/definition/navigation/javaLibWithSources/lib/test/Utils.java

@@ -0,0 +1,7 @@
+package test;
+
+public class Utils {
+    public static void foo(String str) {
+
+    }
+}

idea/testData/script/definition/navigation/javaLibWithSources/script.kts

@@ -0,0 +1,3 @@
+test.Utils.fo<caret>o("asd")
+// REF: (in test.Utils).foo(String)
+// FILE: test/Utils.java

idea/testData/script/definition/navigation/javaLibWithSources/template/template.kt

@@ -0,0 +1,24 @@
+package custom.scriptDefinition
+
+import org.jetbrains.kotlin.script.*
+import java.io.File
+import java.util.concurrent.CompletableFuture
+import java.util.concurrent.Future
+
+class TestDependenciesResolver : ScriptDependenciesResolver {
+    override fun resolve(
+            script: ScriptContents,
+            environment: Map<String, Any?>?,
+            report: (ScriptDependenciesResolver.ReportSeverity, String, ScriptContents.Position?) -> Unit, previousDependencies: KotlinScriptExternalDependencies?
+    ): Future<KotlinScriptExternalDependencies?> {
+        return CompletableFuture.completedFuture(
+                object : KotlinScriptExternalDependencies {
+                    override val classpath: Iterable<File> = listOf(environment?.get("lib-classes") as File)
+                    override val sources: Iterable<File> = listOf(environment?.get("lib-source") as File)
+                })
+
+    }
+}
+
+@ScriptTemplateDefinition(TestDependenciesResolver::class, scriptFilePattern = "script.kts")
+class Template