Fix build issue on Apple M1 with AppleClang

 - Currently catch2 is header directly added in the project
 - Before switching to submodule (in separate PR), copying
   minimal fix from the upstream: catchorg/Catch2#1971

Fixes #527

ext/catch/catch.hpp

@@ -1368,7 +1368,11 @@ namespace Catch {
 
 #ifdef CATCH_PLATFORM_MAC
 
-    #define CATCH_TRAP() __asm__("int $3\n" : : ) /* NOLINT */
+    #if defined(__i386__) || defined(__x86_64__)
+        #define CATCH_TRAP() __asm__("int $3\n" : : ) /* NOLINT */
+    #elif defined(__aarch64__)
+        #define CATCH_TRAP()  __asm__(".inst 0xd4200000")
+    #endif
 
 #elif defined(CATCH_PLATFORM_LINUX)
     // If we can use inline assembler, do it because this allows us to break