upload file as binary:
POST /upload?file&ext=xlsx

insert #href as hyperlinks in row #top column #codeCol
insert #imgHref as images in row #top column #imgCol:
POST /upload?description
{
"fileName":"/upload/7042777731750008522.xlsx",
"codeCol":5,
"imgCol":4,
"hrefs":
[
{"href":"http://infromation-page-1", "imgHref":"https://image-1.png", "top":22},
{"href":"http://infromation-page-2", "imgHref":"https://image-2.png", "top":23}
]
}

get list of uploaded files:
GET /upload?list

download uploaded file:
GET /upload?file&name=/upload/391369502987938486.xlsx

delete uploaded files:
DELETE /upload?list [ "/upload/7042777731750008522.xlsx", "/upload/391369502987938486.xlsx" ]