sketch out spall integration

src/base/base_profile.c

@@ -1,2 +1,16 @@
 // Copyright (c) 2024 Epic Games Tools
 // Licensed under the MIT license (https://opensource.org/license/mit/)
+
+#if PROFILE_SPALL
+internal inline void
+spall_begin(char *fmt, ...)
+{
+  Temp scratch = scratch_begin(0, 0);
+  va_list args;
+  va_start(args, fmt);
+  String8 string = push_str8fv(scratch.arena, fmt, args);
+  spall_buffer_begin(&spall_profile, &spall_buffer, string.str, string.size, os_now_microseconds());
+  va_end(args);
+  scratch_end(scratch);
+}
+#endif