Allows to override the Bundle.module

[rcasula]

This MR will allow us to override the default Bundle when generating resources strings.
Fixes #111 and #121

[liamnichols]

Hi @rcasula, thank you so much for taking the time to open this PR! I appreciate that you are building on top of the config file change 🙇

I've been sitting on the fence about such customisation point since I want XCStrings Tool to generate the correct code in the first place rather than relying on the end-user having to figure things out. But at the same time, I do understand that this isn't always possible.

Is your motivation for this change to work around the issues with Previews (similar to the initial report in #111)? If so, are you able to help me reproduce it? I tried the original steps last year but I still didn't observe the issue.

If I could reproduce the issue myself, I'd want to introduce a similar Bundle.current myself inside the generated source file so that there is no need to define bundle_override in the first place.

That said, I know there are still other scenarios where people might want to use a different Bundle so I think we can still go ahead with this change. I'd just like to see if you can help me with the previews issue while I have you here 🙂

[rcasula]

Hi @liamnichols, thank you for your answer. So interestingly I cannot reproduce it anymore 🤯
So I was using the repo more than a year ago, and it was crashing when using previews referencing resources from another target, but I don't remember which version of Xcode I was using. To be clear, it was not an issue with the repo itself, rather with spm/Xcode (?)
I tested it now with 16.2, 16.1, 15.4, 15.2 and I can't reproduce it anymore.
It's really weird because it was reproducible 100% of the times. Anyway, it's good that it's not happening anymore 😅

[liamnichols]

Yes it's very weird. I have a feeling that it might have been fixed as part of a macOS update. OR it only reproduced under certain conditions.

I'm going to keep this on-hold incase you do still reproduce the issue, but I won't merge it just yet 🙏