Adding the functionality for specify packaged project filename and title

[SeqLaz]

This is complement for the PR on QFieldSync

[suricactus]

We did interactive review with @SeqLaz

Please fix the tests too

[suricactus]

Still not there.

If you accept the comments from the PR, please accept them in batch instead of individual commits.

Also note that the CI is failing. We need to fix this too, don't overlook it.

Finally, we should also add a test about this.

[SeqLaz]

Still not there.

If you accept the comments from the PR, please accept them in batch instead of individual commits.

Also note that the CI is failing. We need to fix this too, don't overlook it.

Finally, we should also add a test about this.

I squashed all the commits into only one commit; after all, there was no need for many changes!

[suricactus]

Getting there, please add the title thing to the QgisCoreOffliner.

[SeqLaz]

Getting there, please add the title thing to the QgisCoreOffliner.

Hey @suricactus please have a look.
I added the option to specify the project title passed to the offliner QfisCoreOffliner. And addressed all the recommendations.

[suricactus]

Suggested change

	export_project_filename = self._export_filename.parent.joinpath(
	f"{self._export_filename.stem}.qgs"
	)
	export_project_filename = self._export_filename

This is enough, we can add a check earlier that self._export_filename is a .qgs file.

This should also be handled in the UI.

[suricactus]

Ok, now it's mostly styling stuff, all the rest looks good !

[SeqLaz]

Ok, now it's mostly styling stuff, all the rest looks good !

Hey @suricactus, in this last commit, I addressed all the suggestions. Have a look!