Add no-ts-ignore lint rule

[dsherret]

@ts-ignore is not a precise way of fixing typescript errors--ignores all ts errors in the next statement rather than a precise ignore for the specific diagnostic you want to ignore (ex. by using an assertion). Due to this inprecision it is sometimes the source of bugs.

This should probably not be in the recommended set due to its prevalence, but I'd like to run it on the deno repo's code.