This adds default exclusion filters for `**/*.min.js` and `**/*-min.js` to the JavaScript auto-builder, meaning that files matching these patterns will no longer be extracted,
unless they are re-included in the `.lgtm.yml` file.
Alerts in minified code aren't shown by default anyway, so we can save ourselves some work by not analyzing them in the first place.
While including minified files in the snapshot can in theory improve analysis results in non-minified files, this is likely to be rare in practice.
This is not so much because extractor output has changed (it hasn't, except for corner cases) but to disable trap caching so as to help us to flush out bugs.
We now use module auto-detection and no TypeScript mode.
This only affects extern extraction in `AutoBuild`, everything else sets these options explicitly.
We currently do not have any ES2015 modules or TypeScript code in our externs, so in practice this is behaviour-preserving.
