Import rules from eslint-plugin-fp-ts-strict and eslint-plugin-fp-ts

[desimpson]

Several rules from eslint-plugin-fp-ts-strict and eslint-plugin-fp-ts seem like a great fit for this ruleset, or eslint-config-agile-digital. A separate issue has been created there, too.

[danielnixon]

Thanks to noUncheckedIndexedAccess, most of the rules from eslint-plugin-fp-ts-strict have become redundant. The same (welcome) thing happened to me with https://github.com/danielnixon/total-functions/

option-over-undefined and option-over-null may still be valuable.