Seeed Lora E5 AT commands

[mvniekerk]

At long last, a stable release using released crates.

[eldruin]

Thank you!
This is clearly a lot of work. Congratulations on that.
While I do not mean to diminish it in any way, I think people will have a hard time understanding what this is.
As per the instruction on top of the list, could you add a

short blog post, article or sufficiently explanatory README showing an example of its use. Ideally, this post would demonstrate using the
device in a small project so that a Rust and/or embedded newcomer can also understand it.
Otherwise, please add it to the WIP section below.