Generate precompiler build error reports

[teo-tsirpanis]

As shown in #9, GOLD Parser displayes LALR conflicts in a not so helpful way. While Farkle 6.0.0 has somehow improved the error messages for them, there is still lots of room for improvement.

We can use the new HTML generator to also create error reports for failed builds, displaying the full LALR state table instead of just the conflicts without any context.

This feature would require changes to the way LALR conflicts are represented but that's an acceptable break. It would also require some changes in the LALR builder and conflict resolver.

[teo-tsirpanis]

Fixed in Farkle 6.3.0 where conflict reports were introduced.