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/test/SDL_test_assert.c

@@ -99,7 +99,7 @@ void SDLTest_AssertPass(SDL_PRINTF_FORMAT_STRING const char *assertDescription,
     SDL_vsnprintf(logMessage, SDLTEST_MAX_LOGMESSAGE_LENGTH - 1, assertDescription, list);
     va_end(list);
 
-        /* Log pass message */
+    /* Log pass message */
     SDLTest_AssertsPassed++;
     SDLTest_Log(SDLTEST_ASSERT_CHECK_FORMAT, logMessage, "Passed");
 }