Introduce -Xintellij-plugin-root, deprecate CompilerJarLocator

compiler/cli/cli-common/src/org/jetbrains/kotlin/cli/common/arguments/CommonCompilerArguments.java

@@ -93,6 +93,13 @@ public abstract class CommonCompilerArguments implements Serializable {
     @Argument(value = "-Xno-check-impl", description = "Do not check presence of 'impl' modifier in multi-platform projects")
     public boolean noCheckImpl;
 
+    @Argument(
+            value = "-Xintellij-plugin-root",
+            valueDescription = "<path>",
+            description = "Path to the kotlin-compiler.jar or directory where IntelliJ configuration files can be found"
+    )
+    public String intellijPluginRoot;
+
     @Argument(
             value = "-Xcoroutines",
             valueDescription = "{enable|warn|error}",