DietPi-DDNS | Add provider YDNS

[TDuffinNTU]

Closes #5128

As YDNS expects a single (one and only one) domain in its API request I've added a special case for it in Menu_Domains but this might not be correct (do we submit domains as a list or is it split by the commas and sent in multiple requests?

There are two options for YDNS updating - One uses an auth header and the other uses an "update link" which is a shortened variant of the update URI but with a random token. I opted for the former since I feel that's more secure and easier to fit into the UX of the application.

Remaining in draft until I can spin up a dietpi VM to test this, but welcome to feedback ahead of that.

[TDuffinNTU]

NB: Seems that some commits are being brought in with my work even though the dev branch was synched up before I brought the change over from master so might need to redo the PR anyway.

[MichaIng]

You can rebase it onto our dev branch, then the commits from our master branch should not appear anymore. But actually they do not hurt either. I anyway would merge our master into our dev at some point.

[TDuffinNTU]

Brilliant! Thanks for the feedback :) Also I'm unsure how to build an image for me to test in a VM -- Is there any docs on how best to do that?

[Joulinar]

No need to build full images. Just install a regular system and switch software branch to yours afterwards 😉

[MichaIng]

Easiest is to just replace the script on your system:

curl -sSfo /boot/dietpi/dietpi-ddns 'https://raw.githubusercontent.com/TDuffinNTU/DietPi/dev/dietpi/dietpi-ddns'

You could also switch the whole branch of your current DietPi system, check out the DEV_GIT* settings in /boot/dietpi.txt to change repo owner and branch, and then run dietpi-update -1 to do the upgrade.

Otherwise you could use our build script to create an image:

curl -sSfLO 'https://raw.githubusercontent.com/MichaIng/DietPi/dev/.build/images/dietpi-build'
chmod +x dietpi-build
./dietpi-build -o TDuffinNTU -b dev -m 0 -a 3

to create an RPi 64-bit image with your branch applied. The script is not documented yet, so check out the code for details: https://github.com/MichaIng/DietPi/blob/dev/.build/images/dietpi-build#L53

[TDuffinNTU]

Also, in other good news, I've tested this both in the CLI and Whiptail interfaces and it works great :)

PS: Rebased on Dev branch too 👍