Not sure if this should really count as `feat`, but any new rule getting added to the default set should at least show up in the changelog for users.
Also updated all the snapshots that needed to be updated for this.
This isn't technically needed at this point in time, but if we consider the following, when we have support for extends
- config A extends config B (lets assume this in DIR A)
- config B specifies a JS plugin (relative path pointing to DIR C)
Without using defineConfig, and setting the paths, we have no way of knowing the directory of B.
By enforcing the use of defineConfig, we can mutate the config, to add the config dir property so the relative paths are resolved properly
camc314