Fix all swiftlint errors and remove Tests from the linter

[ppamorim]

Hi,

In this PR I fixed all swiftlint errors and removed the Tests and Demos folder for the linter, this sorts the issue #97.
I did fix the errors in points of the code that are going to be removed, as listed on #133.

My local linter is on the latest version 0.42.0.

Multiple linter fixes applied by running swiftlint autocorrect.

Regards.

[ppamorim]

Any idea why the checks are being cancelled? Internal error?

[ppamorim]

@curquiza I had to update Xcode to 12.4 to support decode(String?.self, ...) otherwise it crashes on Xcode 11.5.

[bidoubiwa]

Why do we exclude these folders?

[ppamorim]

We don't need swiftlint in the demos and tests folder at the moment. I can open a new PR to sort them all later and reintroduce them back to the swiftlint.

[bidoubiwa]

Hey, really sorry @ppamorim but linting is bound to a project as a whole not only the source code. It creates consistency and makes contributing easier.
It would be weird if I don't have to follow the same rules in the tests folder than in the source folder.

[bidoubiwa]

Thanks a lot for this PR! Sorry for the delay

[bidoubiwa]

per the discussion we have in a thread.

For consistency in coding practices, I prefer linting to be applied in tests and demo's dir's as well.

#137

[bidoubiwa]

LGTM

[bidoubiwa]

bors merge

[bors]

Build succeeded:

• integration-tests
• linter-check