message: Add ConvertComponent handling for double/uint64 data, albeit downcasted
diff: float ConvertComponent(const ResourceFormat &fmt, byte *data)
  {
  - if(fmt.compByteWidth == 4)
  + if(fmt.compByteWidth == 8)
  + {
  + // we just downcast
  + uint64_t *u64 = (uint64_t *)data;
  + int64_t *i64 = (int64_t *)data;
  +
  + if(fmt.compType == CompType::Double || fmt.compType == CompType::Float)
  + {
  + return float(*(double *)u64);
  + }
  + else if(fmt.compType == CompType::UInt || fmt.compType == CompType::UScaled)
  + {
  + return float(*u64);
  + }
  + else if(fmt.compType == CompType::SInt || fmt.compType == CompType::SScaled)
  + {
  + return float(*i64);
  + }
  + }
  + else if(fmt.compByteWidth == 4)
  {
  uint32_t *u32 = (uint32_t *)data;
  int32_t *i32 = (int32_t *)data;
  