[clang-tidy] [bugprone-assert-side-effect] Ignore list for functions/methods

A semicolon-separated list of the names of functions or methods to be considered as not having side-effects was added for bugprone-assert-side-effect. It can be used to exclude methods like iterator::begin/end from being considered as having side-effects.

Differential Revision: https://reviews.llvm.org/D116478