feat(asm&go4k): Rewrote both library & player to use text/template compiler

There is no more plain .asms, both library & player are created from the templates using go text/template package.

templates/player.h

@@ -0,0 +1,50 @@
+// auto-generated by Sointu, editing not recommended
+#ifndef SU_RENDER_H
+#define SU_RENDER_H
+
+#define SU_MAX_SAMPLES     {{.MaxSamples}}
+#define SU_BUFFER_LENGTH   (SU_MAX_SAMPLES*2)
+
+#define SU_SAMPLE_RATE     44100
+#define SU_BPM             {{.Song.BPM}}
+#define SU_PATTERN_SIZE    {{.Song.PatternRows}}
+#define SU_MAX_PATTERNS    {{.Song.SequenceLength}}
+#define SU_TOTAL_ROWS      (SU_MAX_PATTERNS*SU_PATTERN_SIZE)
+#define SU_SAMPLES_PER_ROW (SU_SAMPLE_RATE*4*60/(SU_BPM*16))
+
+#include <stdint.h>
+#if UINTPTR_MAX == 0xffffffff
+    #if defined(__clang__) || defined(__GNUC__)
+        #define SU_CALLCONV __attribute__ ((stdcall))
+    #elif defined(_WIN32)
+        #define SU_CALLCONV __stdcall
+    #endif
+#else
+    #define SU_CALLCONV
+#endif
+
+{{- if .Output16Bit}}
+typedef short SUsample;
+#define SU_SAMPLE_RANGE 32767.0
+{{- else}}
+typedef float SUsample;
+#define SU_SAMPLE_RANGE 1.0
+{{- end}}
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void SU_CALLCONV su_render_song(SUsample *buffer);
+{{- if gt (.SampleOffsets | len) 0}}
+void SU_CALLCONV su_load_gmdls();
+#define SU_LOAD_GMDLS
+{{- end}}
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif