Update for SDL3 coding style (#6717)

I updated .clang-format and ran clang-format 14 over the src and test directories to standardize the code base.

In general I let clang-format have it's way, and added markup to prevent formatting of code that would break or be completely unreadable if formatted.

The script I ran for the src directory is added as build-scripts/clang-format-src.sh

This fixes:
#6592
#6593
#6594

(cherry picked from commit 5750bcb174)

src/timer/psp/SDL_systimer.c

@@ -34,8 +34,7 @@
 static struct timeval start;
 static SDL_bool ticks_started = SDL_FALSE;
 
-void
-SDL_TicksInit(void)
+void SDL_TicksInit(void)
 {
     if (ticks_started) {
         return;
@@ -45,8 +44,7 @@ SDL_TicksInit(void)
     gettimeofday(&start, NULL);
 }
 
-void
-SDL_TicksQuit(void)
+void SDL_TicksQuit(void)
 {
     ticks_started = SDL_FALSE;
 }