[decompiler] decompile particle defs using specialized macros (#1077)

* [decompiler] `defpart` and `defpartgroup`

* support sounds in part defs natively

* make `meters_to_string`

* update refs

* clang

* make macros in pair only work inside `(unquote ...`

* update source

* update finish

* fix

common/util/print_float.cpp

@@ -1,7 +1,7 @@
 #include <cmath>
 
 #include "third-party/fmt/core.h"
-#include "common/common_types.h"
+#include "common/goal_constants.h"
 #include "third-party/dragonbox.h"
 #include "print_float.h"
 #include "common/util/assert.h"
@@ -19,6 +19,14 @@ std::string float_to_string(float value, bool append_trailing_decimal) {
   return {buff};
 }
 
+/*!
+ * Wrapper around float_to_string, for printing meters. Unlike float_to_string, it does not append
+ * decimals by default.
+ */
+std::string meters_to_string(float value, bool append_trailing_decimal) {
+  return float_to_string(value / METER_LENGTH, append_trailing_decimal);
+}
+
 int float_to_cstr(float value, char* buffer, bool append_trailing_decimal) {
   assert(std::isfinite(value));
   // dragonbox gives us: