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)

test/testautomation_suites.h

@@ -32,7 +32,7 @@ extern SDLTest_TestSuiteReference timerTestSuite;
 extern SDLTest_TestSuiteReference videoTestSuite;
 
 /* All test suites */
-SDLTest_TestSuiteReference *testSuites[] =  {
+SDLTest_TestSuiteReference *testSuites[] = {
     &audioTestSuite,
     &clipboardTestSuite,
     &eventsTestSuite,