Scripting: update scripts in source roots handling

#KT-52525 fixed
related to #KT-52735

libraries/scripting/common/src/kotlin/script/experimental/api/scriptCompilation.kt

@@ -170,6 +170,13 @@ val ScriptCompilationConfigurationKeys.sourceFragments by PropertiesCollection.k
  */
 val ScriptCompilationConfigurationKeys.hostConfiguration by PropertiesCollection.key<ScriptingHostConfiguration>(isTransient = true)
 
+/**
+ * Should the script be always considered standalone
+ * If true, it is ignored when compiled along with other sources (starting from 1.9, according to SkipStandaloneScriptsInSourceRoots language feature)
+ * true by default
+ */
+val ScriptCompilationConfigurationKeys.isStandalone by PropertiesCollection.key<Boolean>(true)
+
 /**
  * The sub-builder DSL for configuring refinement callbacks
  */

libraries/scripting/common/src/kotlin/script/experimental/api/scriptIdeConfiguration.kt

@@ -20,8 +20,8 @@ enum class ScriptAcceptedLocation {
     Sources,     // Under sources roots
     Tests,       // Under test sources roots
     Libraries,   // Under libraries classes or sources
-    Project,     // Under project folder, including sources and test sources roots
-    Everywhere;
+    Project,     // Project infrastructure: project files excluding source roots
+    Everywhere;  // All places in the project
 }
 
 val ScriptCompilationConfigurationKeys.ide
@@ -30,9 +30,4 @@ val ScriptCompilationConfigurationKeys.ide
 val IdeScriptCompilationConfigurationKeys.dependenciesSources by PropertiesCollection.key<List<ScriptDependency>>()
 
 val IdeScriptCompilationConfigurationKeys.acceptedLocations
-        by PropertiesCollection.key(
-            listOf(
-                ScriptAcceptedLocation.Sources,
-                ScriptAcceptedLocation.Tests
-            )
-        )
+        by PropertiesCollection.key(listOf(ScriptAcceptedLocation.Everywhere))