[clang-tidy]Add new check readability-avoid-nested-conditional-operator (#78022)

Finds nested conditional operator.
Nested conditional operators lead code hard to understand, so they
should be spl

[clang-tidy]Add new check readability-avoid-nested-conditional-operator (#78022)

Finds nested conditional operator.
Nested conditional operators lead code hard to understand, so they
should be splited as several statement and stored in temporary varibale.

show more ...