downloading .fit files

POST `https://teamapi.coros.com/activity/detail/download?labelId=441546133112651776&sportType=100&fileType=4`

Returns

```
{
"apiCode": "D755ECA8",
"data": {
"fileUrl": "https://d31oxp44ddzkyk.cloudfront.net/fit/434787216907059200/441546133112651776.fit"
},
"message": "OK",
"result": "0000"
}
```

That returns a .fit file, which I could convert with gpsbabel if needed.

I wonder if messing with different fileTypes will yield different formats?

No project files or tests are named. Start by locating the code that calls the teamapi.coros.com activity download endpoint, then compare responses for different fileType values; completion would require a clearly defined supported-format change or documentation, which this issue does not yet specify.

Written by the indexing model from the issue text.