Update ElectronShellOpenExternalSink location

Move the class ElectronShellOpenExternalSink to
ClientSideUrlRedirect.qll. It's been to be a more appropriate location.

Author: toufik-airane

javascript/ql/src/semmle/javascript/security/dataflow/ClientSideUrlRedirect.qll

@@ -60,4 +60,15 @@ module ClientSideUrlRedirect {
       guard instanceof HostnameSanitizerGuard
     }
   }
+
+  /**
+   * Improper use of openExternal can be leveraged to compromise the user's host.
+   * When openExternal is used with untrusted content, it can be leveraged to execute arbitrary commands.
+   */
+  class ElectronShellOpenExternalSink extends Sink {
+    ElectronShellOpenExternalSink() {
+      this =
+        DataFlow::moduleMember("electron", "shell").getAMemberCall("openExternal").getArgument(0)
+    }
+  }
 }

javascript/ql/src/semmle/javascript/security/dataflow/CodeInjectionCustomizations.qll

@@ -138,15 +138,4 @@ module CodeInjection {
         API::moduleImport("module").getInstance().getMember("_compile").getACall().getArgument(0)
     }
   }
-
-  /**
-   * Improper use of openExternal can be leveraged to compromise the user's host.
-   * When openExternal is used with untrusted content, it can be leveraged to execute arbitrary commands.
-   */
-  class ElectronShellOpenExternalSink extends Sink {
-    ElectronShellOpenExternalSink() {
-      this =
-        DataFlow::moduleMember("electron", "shell").getAMemberCall("openExternal").getArgument(0)
-    }
-  }
-}
+}