Add a section to explicitly list all the rulesets

[RebeccaStevens]

No description provided.

[RebeccaStevens]

Not sure if I like the heading Presets & Categorized. Can't think of any alternatives though.

[codecov]

Codecov Report

Merging #77 into master will decrease coverage by 0.66%.
The diff coverage is 83.33%.

@@            Coverage Diff             @@
##           master      #77      +/-   ##
==========================================
- Coverage   94.42%   93.76%   -0.67%     
==========================================
  Files          33       33              
  Lines         538      529       -9     
  Branches      119      119              
==========================================
- Hits          508      496      -12     
- Misses         22       25       +3     
  Partials        8        8

Impacted Files	Coverage Δ
src/configs/all.ts	100% <ø> (ø)	⬆️
src/rules/index.ts	100% <ø> (ø)	⬆️
src/index.ts	0% <0%> (ø)	⬆️
src/configs/no-statements.ts	100% <100%> (ø)	⬆️
src/configs/no-mutations.ts	100% <100%> (ø)	⬆️
src/configs/no-exceptions.ts	100% <100%> (ø)	⬆️
src/configs/currying.ts	100% <100%> (ø)	⬆️
src/configs/no-object-orientation.ts	100% <100%> (ø)	⬆️
src/configs/external-recommended.ts	0% <0%> (-100%)	⬇️

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[RebeccaStevens]

Blocked by #80 (Don't merged until it is)