Add Cocoapods support

[davbeck]

As the maintainer, you will probably want to submit this to the spec repo yourself (https://guides.cocoapods.org/making/making-a-cocoapod.html), but this will at least allow users to use the library using a manual git link: pod 'CodableCSV', git: 'https://github.com/dehesa/CodableCSV.git'.

[dehesa]

Hi David,

Thank you for the PR. I am not a user of Cocoapods, so I don't really know how it works. I will check it out tomorrow.

For what I am seeing the .podspec seems to be the "source of truth" and the version number is not picked from git tags (as with SPM) but from the spec, right? Your PR indicates the latest version as 0.2.0 and currently the repo is in 0.3.0

[davbeck]

It's a little funny. There is a version in the podspec, as well as a pointer to the location of the source code (s.source). A very common setup is to point that at the tag matching the version in the spec, which is what I've done here. So if you submitted that spec as is, it would pull the 0.2.0 tag.

That should be changed to whatever the latest version is. I think it was 0.2.0 when I forked the project.

[dehesa]

Your PR seems good. Thank you!

Interestingly, I went to cocoapods.org to check if someone already uploaded the framework and there is another package called CodableCSV 😀 It is not this framework and it is much much simple, but I wonder whether they will allow me to upload a package with the same name.