feat: sort repo by pushed date

[AungMyoKyaw]

No description provided.

[brandonrosage]

Because we have another PR suggesting that stars be the default sorting method, my thinking here is that we default to the most intuitive and generic sorting method, and then either offer a _config.yml parameter or docs describing the available sorting values.

I think the method you're proposing -- pushed_date -- is the most intuitive. It's also consistent with other GitHub repo listings.

Any other thoughts?

[AungMyoKyaw]

Yes I agree with you. Sorting by pushed_date is better option.

[tterb]

If possible, I feel like a _config.yml parameter would be an ideal solution since that could cater to all preferences, though I agree that pushed_date would be an intuitive default.
Additionally, it would be nice if there was a parameter that would also allow users to exclude certain repositories, in the case of inactive or no longer maintained projects.

[brandonrosage]

@tterb I agree that we should support more detailed configuration via _config.yml. I'll help do that in a separate PR, but get the ball rolling by merging this one 👍

It's a solid default.