Unify to single script

[henningjanssen]

• Unified all scripts to a single command-line tool
• Python3 minor adjustments
• removed scripts to download firmware as the servers seem to be unmaintenanced

[henningjanssen]

If you are fine with these changes and want to accept my pull-request, you maybe should notify https://github.com/tripflex/MOD-t

[Xaero252]

Sorry for the delay, I'll be reading through this today.
My Mod-T died last year, the control board is toast. I won't be able to test anything.

[henningjanssen]

Testing on my end is pretty heavy, too, as my Mod-T sometimes won't react to commands other than send_gcode and status and sometimes does not extrude. I hope it does not also die soon as I got it only a few weeks ago.

I basically took your scripts and build a class and argument parser around it as well as adding some braces somewhere at a print.
If you do not want to look into it as you have no use for this code anymore, it's fine.

[Xaero252]

Looks good to me.

Definitely a lot nicer to only have 2 files in the repo. I should probably try and figure out what's wrong with my Mod-T (I have a feeling only something in the power section is screwed up, like a missing voltage rail.) I have since also purchased a different printer.

The DFU script is kind of useless without the main modt.py script as is, which is why I wanted to scrap the bash script eventually and just do everything in python. enter DFU, flash the firmware and be done. But there shouldn't be much need to flash firmware now that there is one final firmware and nothing new is likely to come.