Wrap brace (and/or parentheses) after long function signature in clang-format
A new option AlignAfterOpenBracket: BlockIndent was just added (2021-01-17) in the approved code review https://reviews.llvm.org/D109557, which I anticipate will be in the next clang format release.
AlignAfterOpenBracket: BlockIndent: If set, it will always break after an
open bracket, if the parameters don't fit on a single line. Closing brackets
will be placed on a new line.