Add missing tactic subpackage in default stack.yaml

[jneira]

• It is not being built in ci (cause it is identical to stack-8.6.5.yaml) 🤔

[isovector]

🚢

[isovector]

Does it make sense to exclude stack.yaml from source control? The reason I missed this is that I have my copy ignoring changes, since I want to use a different resolver. If it's not being built in CI either I think we should just remove it and have users choose one.

[jneira]

mmm well i suppose beginners had to do one more step in that case.
It could a way to signal what is the "default" resolver to build the project, the one that should work for the largest number of use cases.
But that make everyone else to set explicitly the stack yaml so i understand your point.
If we keep it i would add it to ci, to avoid let it not synchronized and cause not always will be equivalent to another one.