* do not move constant variables
* applet_manager: avoid possible use after move
* use constant references where pointed out by msvc
* extra_hid: initialize response
* ValidateSaveState: passing slot separately is not necessary
* common: mark HashCombine as nodiscard
* cityhash: remove use of using namespace std
* Prefix all size_t with std::
done automatically by executing regex replace `([^:0-9a-zA-Z_])size_t([^0-9a-zA-Z_])` -> `$1std::size_t$2`
based on 7d8f115
* shared_memory.cpp: fix log error format
* fix compiling with pch off
