Function isInputFile

isInputFile(obj: unknown): obj is InputFile
Type guard to check if an arbitrary object conforms to the InputFile interface.
Parameters
- obj: unknown
  Object or value to check.
Returns obj is InputFile
true if obj is an InputFile, false otherwise.
Example
```
if (isInputFile(payload.photo)) {
  console.log("Found file upload:", payload.photo.filename);
}
```