feat: handle special chars & add project folders

[pugooo]

This closes #8 and is a simple approach regarding #9.

Regarding #8: Colons are removed. All the other special chars are replaced by '-'.
Regarding #9: After issue retrieval it will also fetch related projects. It will then create a folder per project and place issues inside the folder.

[benr77]

Hello. Thanks for your input! Sorry but I won't merge it like this as it's a mixture of coding standards fixes, a bug fix and a new feature.

Please can you submit separate PRs for

• Correct issue names to be compatible with file path (on windows) #8
• Allow seperate folders for groups, projects and different instances #9
• the coding standards fixes

I'm not sure your solution to the project related stuff in #9 actually addresses the problem either - can we flesh this out more in the issue before you submit a PR.

I also think there's a problem with the Windows filename bugfix as you are regexing the issue title which is used in the issue note itself. We only need the filename to be fixed up, so this needs doing here instead:

obsidian-gitlab-issues/src/filesystem.ts

Line 67 in 35b3b52

return this.settings.outputDir + '/' + issue.title + '.md';

Thanks.

[pugooo]

I issued a new PR for #8.
Regarding #9 I agree, that my approach doesn't resolve the whole requirement.
Are you ok, if I open a new issue regarding my simple approach and submit a PR for that, as it already improves the usability. It also shouldn't be a problem to then flesh it out more in the future for #9.