"best practice" config is missing two rules

[dannobytes]

Looks like the main index is missing a couple of rules here:
https://github.com/43081j/eslint-plugin-wc/blob/master/src/index.ts#L11-L19

In addition, the best-practice config is also missing them as well, which conflicts with what's stated in the README:
https://github.com/43081j/eslint-plugin-wc/blob/master/src/configs/best-practice.ts

Just need to add these missing rules to both places so we can then use them.