Add option to skip downloading release assets for specific repositories

[einsteinx2]

In general, I want to back up all releases from the repos that I star, however I have one repo in particular (syncthing/syncthing) that has 27GB of releases assets! There's also one or two others that have very large releases that I don't really need to have a copy of.

It would be great to be able to specific specific repos to skip asset downloading when using the --assets flag. Something like a --skip-assets REPO_NAME_REGEX should do the trick.

I'll get a PR in for this after the other stuff :P

[einsteinx2]

Additionally, a flag such as --include-assets REPO_NAME_REGEX to do the opposite and only download assets for matching repos would be very useful as well.

[Iamrodos]

Approaches:

1. --skip-assets-on REPO (allow multiple)

   • covers the common case: avoid large repos like syncthing
   • allowing multiple can avoid use of regex
   • simple

2. --include-assets-on / --exclude-assets-on pair

   • edge cases if same repo in both

3. --assets-filter skip:repo1,repo2

   • complex syntax

I like option 1 - simple, solves the original problem. Anyone have thoughts?

[josegonzalez]

Probably just the first case is fine.