Renzu missing instances and simplifying the tree

[JorgeCastilloPrz]

• We've detected some missing instances on the graph. It was due to how new rounds where generating new typeclass instances blocks with the same name than older ones and that redundancy in the name was causing nomnoml to ignore those. Here I'm providing a fix to group them properly under the same typeclass instances block even if it was generated on a previous processing round. I'm doing it by rewriting the file with properly updated content each round.

• I'm also simplyfing the tree by not rendering redundant instances for inherited typeclasses. That means that OptionMonoidInstance would is now rendered as direct instance of Monoid but not as an instance of Semigroup even if it's still valid. But in purpose of making a tree easier to understand I think it's working much better. This is how it looks like with these changes:

• I've also fixed the problem causing multiple redundant arrows being rendered.

[codecov]

Codecov Report

Merging #822 into master will increase coverage by 0.05%.
The diff coverage is 85%.

@@             Coverage Diff              @@
##             master     #822      +/-   ##
============================================
+ Coverage     44.17%   44.23%   +0.05%     
- Complexity      617      625       +8     
============================================
  Files           290      290              
  Lines          7396     7420      +24     
  Branches        828      831       +3     
============================================
+ Hits           3267     3282      +15     
- Misses         3830     3838       +8     
- Partials        299      300       +1

Impacted Files	Coverage Δ	Complexity Δ
...cessor/src/main/java/arrow/renzu/RenzuGenerator.kt	75.24% <85%> (+1.22%)	26 <11> (+9)	⬆️
...rocessor/src/main/java/arrow/renzu/ModuleStyles.kt	0% <0%> (-60%)	0% <0%> (ø)
...src/main/java/arrow/instances/AnnotatedInstance.kt	60% <0%> (-20%)	3% <0%> (-1%)

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