[Code Cleanup] Cleaned up some header files and move a bit of debugging logic to cmake (#7677)

* Renamed lmms_basics.h to LmmsTypes.h and scoped it down for that purpose.

* Shifted the LMMS_STRINGIFY macro to it's own header.

* Removed the debug.h header file and use cmake to handle the macro logic.

* Remove some unused headers and include directives

plugins/SpectrumAnalyzer/SaProcessor.cpp

@@ -27,11 +27,9 @@
 
 #include <algorithm>
 #include "lmms_math.h"
-#ifdef SA_DEBUG
-	#include <chrono>
-#endif
 #include <cmath>
 #ifdef SA_DEBUG
+	#include <chrono>
 	#include <iomanip>
 	#include <iostream>
 #endif