Fix-visibility plugin

This is a plugin for the Aspect CLI.

It listens to Bazel's build event protocol and filters for the Aborted_ANALYSIS_FAILURE event. If the Analysis Failure is due to a message containing is not visible from target this indicates that the visibility attribute of a target doesn't include the package where our target is defined.

After the build completes, the plugin offers to repair the problem by adding the missing visibility entry.

Demo

In this demo, we uncomment the alias target from example/BUILD.bazel and run bazel build example to see the failure. The plugin offers to automatically add the missing entry to visibility of the //:dev target, then we run the same build again, and it passes. The demo then runs git diff so you can see what edit was made.