Introduce experimental -Xuse-javac compilation mode

In this mode, javac AST and Symbol files are used during
Kotlin compilation instead of PSI / binary stuff.
Later, they are reused for Java file compilation.
javac in this mode is integrated into kotlinc.

compiler/cli/cli.iml

@@ -23,5 +23,6 @@
     <orderEntry type="module" module-name="annotation-collector" />
     <orderEntry type="module" module-name="builtins-serializer" />
     <orderEntry type="module" module-name="frontend.script" />
+    <orderEntry type="module" module-name="javac-wrapper" />
   </component>
 </module>