[JS IR] - Remove file lowering declarations from lowering phases

- rename fileToPurenessInitializers onto fileToInitializerPureness
- remove redundant check on top-level property

[JS IR] Rename initialis* to initializ* for consistency

[JS IR] Move propertyLazyInitialization property to context from configuration

[JS IR] Add test on lazy initialization properties order

[JS IR] Add multi module for lazy initialization of properties

[JS IR] Move tests onto js.translator

[JS IR] Rename fileToInitializerPureness according to context name

^KT-43222 fixed

js/js.frontend/src/org/jetbrains/kotlin/js/config/JSConfigurationKeys.java

@@ -89,7 +89,4 @@ public class JSConfigurationKeys {
 
     public static final CompilerConfigurationKey<ErrorTolerancePolicy> ERROR_TOLERANCE_POLICY =
             CompilerConfigurationKey.create("set up policy to ignore compilation errors");
-
-    public static final CompilerConfigurationKey<Boolean> PROPERTY_LAZY_INITIALISATION =
-            CompilerConfigurationKey.create("enable property lazy initialisation");
 }