Refactoring some stuff in the parser lib, moving functions out of headers

parser/src/input.c

@@ -0,0 +1,10 @@
+#include "./input.h"
+#include "me/types.h"
+
+t_u32 ts_decode_ascii(const t_u8 *string, t_u32 length, t_i32 *code_point)
+{
+	(void)(length);
+	*code_point = 0;
+	*(t_u8 *)code_point = *string;
+	return (1);
+}