Add an option to send the json as one command for large matrix

[dosipod]

There was a fix for mqtt in wled today and we can send the full image via mqtt now but could only test with 16x16 and we want to test on larger matrix , noticed that the command to send for 16x32 is split to two in code ,

Is it possible to add an option for a format that will just give the whole thing as one command even if that will not work from tool could be useful for automation . I am still after a way to run your htm file from command line or automation so I could automate everything without going into ui so something line a script the will get ip and image as parameters and will safe the json output . If that is there then things will change beyond expectation . And yes this is only feature request but not an issue . I hope otherwise you are doing fine

[dosipod]

mushroom_16x32.txt

I was able to use the api for 16x32 as single command and that worked from mqtt and when saved to preset . This is on esp32