No the process is unique to this game, unfortunately you have come in at a time when modding for this game is still brand new, literally only started about a month ago. So things are going to be a bit haphazard for a while, it may be best to just wait until things become consolidated and the process becomes a bit easier.
But here is a quick overview of the process.
1. Using DAI Tools (or DA Tools at this time) extract the resources you want to edit.
2. Edit resources in whatever tool you are most comfortable with
3. Using the DAI modding tool, replace the resource with the one you created
4. Using the DAI modding tool, save a distributable patch
5. Distribute your patch via whatever distribution means you want
For end users (and also to test your mod):
6. Using the DAI mod manager, create a merged patch and place into the DAI Installation Directory/Updates directory and play.