* add runtime variable list type
* add configs to ChainSpec
* git rid of max request blocks type
* fix tests and lints
* remove todos
* git rid of old const usage
* fix decode impl
* add new config to `Config` api struct
* add docs fix compilt
* move methods for per-fork-spec to chainspec
* get values off chain spec
* fix compile
* remove min by root size
* add tests for runtime var list
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Co-authored-by: Jimmy Chen <jchen.tc@gmail.com>