Idea: create an action that allows tracking the size changes of builds between specific branches.

[nerrad]

Currently in the WooCommerce blocks project we use the compressed-size-action for tracking build size increases in pulls against the master branch.

Since we're moving to having pulls created for releases, I thought it'd be neat if there could be a signal to this action that triggers comparing the pull against the most recent release tag (non pre-release).

The benefit of this is that the release pull request would then have data included in it about the impact the entire release has on increases in build sizes from the previous release which can be hard to notice incrementally during ongoing development between releases.

This data can then be used to inform whether the size impact is more significant than expected and potentially block the release until it's dealt with.