b77b1f2277
Here we provide docs specifically for writing a plugin, using a plugin, and we improve the text about writing rules. Change-Id: I3fcfbc50609054158e5bdf964499005a79b4fba8 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/410160 Reviewed-by: Brian Wilkerson <brianwilkerson@google.com> Commit-Queue: Samuel Rawlins <srawlins@google.com>