Provide the ability to specify payload as Hex

[EugenWay]

Problem to Solve

if the user already has an encoded payload, you need to provide the opportunity to specify it in the input and check that it is a hex type:

1. On the upload program page
2. On the send message page

At the same time, when sending a message/uploading program, we do not indicate the metafile (we only save it on the backend)

Possible Solution

1. Add checkbox above payload input like "I have encoded payload"
2. Сheck the contents of the input has a hex type
3. This case doesn't use metadata for upload program/ send message

Notes

No response