Include cstdint for all files that use u?int.._t.

[hzeller]

Essentially using the clang-tidy output Surelog_clang-tidy.out and running the insert-header script from hzeller/dev-tools

../dev-tools/insert-header.cc '<cstdint>' $(grep "no header providing.*misc-include-cleaner" Surelog_clang-tidy.out | awk -F: '/^(include|src)\/.*"u?int.._t"/ { print $1}' | sort -u)
.github/bin/run-clang-format.sh