Add tags to dependend packages in order to be able to fetch DKImagePickerController with a versioned rule

[richardtop]

Similarly to #715, the Package.manifest file in this project still uses branches instead of tags, so it is not possible to use a versioned release rule in order to install this package.

Proposed solution:

Add tags for each of the dependent packages and ensure that not a single package installed with the .branch rule, then update the Package.swift file in this repository and bump the tag here too:
https://github.com/zhangao0086/DKImagePickerController/blob/develop/Package.swift#L18-L19