without this change when we work with the repo with common contracts then in the logs we can see that a lot of unnecessary files are processed. Those files are related to the fact that `target` / `build` folders are created and reside in the path in which we're searching for contracts. Due to this we have duplicates in terms of converting files.
with this change we add the `excludeBuildFolders` property that is by default turned off. If you enable it in the `pom.xml` that is used by the consumers to install stubs locally then the target folder gets ignored.
fixes#167
0fd91976f3