Add documentation for 'skip' configuration option in the vaadin maven plugin.

depends on vaadin/flow#22516

Author: jorgheymans

articles/flow/configuration/maven.adoc

@@ -160,6 +160,9 @@ Filtering can be completely skipped by setting `enabled` to `false`.
 `frontendIgnoreVersionChecks`::
 Makes Flow skip node and npm/pnpm/bun version checks during bundle build and development server startup. Note that disabling frontend tools version checking can cause failing builds and other issues that are difficult to debug.
 
+`skip`::
+Skips the execution of the maven plugin. Defaults to `false`. Use `-Dvaadin.skip` if you want to control this setting from the maven command line.
+
 === Build Frontend Goal Parameters
 
 The following parameters are used with the `build-frontend` goal, in addition to the parameters described above.