""" fileServerURL = "http://192.168.88.104:8080"
filepath = "/home/ton/docker-apps/sendreceive/image/test.zip"
filename = basename(filepath)
filebytes = read(filepath)

plik_oneshot_upload - Upload a single file to a plik server using one-shot mode

This function uploads a raw byte array to a plik server in one-shot mode (no upload session).
It first creates a one-shot upload session by sending a POST request with `{"OneShot": true}`,
retrieves an upload ID and token, then uploads the file data as multipart form data using the token.

The function handles the entire flow:
1. Obtains an upload ID and token from the server
2. Uploads the provided binary data as a file using the `X-UploadToken` header
3. Returns identifiers and download URL for the uploaded file

# Arguments:
  - `fileServerURL::String` - Base URL of the plik server (e.g., `"http://192.168.88.104:8080"`)
  - `filename::String` - Name of the file being uploaded
  - `data::Vector{UInt8}` - Raw byte data of the file content

# Return:
  - A named tuple with fields:
    - `uploadid::String` - ID of the one-shot upload session
    - `fileid::String` - ID of the uploaded file within the session
    - `downloadurl::String` - Full URL to download the uploaded file

# Example
```jldoctest
using HTTP, JSON

# Example data: "Hello" as bytes
data = collect("Hello World!" |> collect |> CodeUnits |> collect)

# Upload to local plik server
result = plik_oneshot_upload("http://192.168.88.104:8080", "hello.txt", data)

# Download URL for the uploaded file
println(result.downloadurl)
```
"""