Apply clang-format across the whole tree

Run clang-format (the repo's .clang-format: LLVM base, 120 cols, tabs,
Allman functions) over every source file so the tree is formatter-clean.
Whitespace only -- no behavior change; full x64 + x86 suites pass.

Also set SortIncludes: false in .clang-format. Windows include order is
load-bearing (windows.h must precede tlhelp32.h / mmreg.h / xinput.h /
dinput.h; winsock2.h must precede windows.h), and the default
alphabetical sort reorders tlhelp32.h ahead of windows.h -- a build
break. Leaving order alone keeps the manual, correct grouping.

host/src/capture/keyed_mutex.hpp

@@ -4,8 +4,7 @@
 
 #include <windows.h> // HRESULT, S_OK, WAIT_ABANDONED, WAIT_TIMEOUT
 
-namespace coop
-{
+namespace coop {
 
 // True when an IDXGIKeyedMutex::AcquireSync result means we now HOLD the mutex and must copy + then
 // release it. S_OK is the normal case. WAIT_ABANDONED is success-with-recovery: a previous owner