So you want to create an ACA extension and your own libraries?
We'll show you how with an awesome Community Repo
You probably haven't seen myold blog: https://hub.alfresco.com/t5/alfresco-content-services-blog/alfresco-community-admin-tools/bc-p/31552... at that time we were just nerding and wanted to get rid of the /share Javascript-Console (who hasn't used that 
).
The problem with that project was:
- We were only using it internally
- The github repo was a manual copy of our internal gitlab
- It was a full custom app based on ACA, but the app didn't look anything like ACA. So most of the things where disabled
- We were using a mono-repo so we couldn't share all code
So we started with the following steps
- Create a new repo we could share with the community
- Create new libraries
- So we could use these libraries like the JS-Console in our custom apps and customer apps
- Create a Demo-App to test these libraries
- Moved to code to the new repo and libraries
- Create a pipeline to build and release the libraries
- Use the newly created libraries in our own apps
This brought us this cool project/Repo https://github.com/Contezza/contezza-apps-community
I'm not going to copy and paste the Readme here, go read it there. So you can basically start the app, see how we extend ACA/ADW and build your own libraries and do the same.
In the future:
- Sync our gitlab repo to github so everyone can keep in sync
- Maybe create an ACA+ Community app with all community libraries under Alfresco or OrderOftheBee umbrella
- Make the releasenotes in English
- Move the JS-console code and package it in a jar, so it people can use it directly in the platform --> need community support on how to do that. we can build a war from the app, but package it in a jar with no auth issues --> not sure
