feat: allow exclusion of scopes from analyze_commits

[hanno-jonlay]

Discussed over in #7

I thought I'd put out the PR here, because otherwise it'll just get abandoned - it should work as expected - when you call analyze_commits(ignore_scopes: ['android','windows']), it will ignore any commits which have those scopes within them.

What I'm not happy about, is that even if the commits are ignored by the analyze_commits action, they would still be included in the conventional_changelog.

Ideally, excluding a commit like this would create something like a Fastlane::Actions::SharedValues::RELEASE_COMMITS array, which would not include the ignored scopes, and the conventional_changelog action would automatically read from that array.

But that's more of a change to the way this plugin works, so would have to be handled separately 😄

I'm not going to have any time to touch this for the next few months, sadly. So if anybody wants to build upon it, etc, they're more than welcome to.

[aecorredor]

@jonlay I'm gonna try to work on this:

Ideally, excluding a commit like this would create something like a Fastlane::Actions::SharedValues::RELEASE_COMMITS array, which would not include the ignored scopes, and the conventional_changelog action would automatically read from that array.

on another PR and see if I can get it to work. I think we can still get this in for now though. What do you think @xotahal?

[hanno-jonlay]

Awesome! And sounds great - if you can pull it off, what would be great is that conventional_changelog should not need to do anything like this, as it's doing right now:

commits = get_commits_from_hash(hash: last_tag_hash)
parsed = parse_commits(commits)

Would definitely keep things DRY and more versatile, as a properly structured SharedValues::RELEASE_COMMITS would be much easier to iterate through.