Portable C++ library for sending AT commands and parsing their responses

Designed for resource contrained (embedded) environments, but should also be useful elsewhere

Since this uses C++ iostream-like approach, this library defaults to a blocking behavior. See notes below about this topic.

This library depends on https://github.com/malachib/util.embedded library. Specifically, it utilizes a lightweight C++ iostream implementation suitable for embedded environments.

Because of this, this library is compatible with:

• mbed OS
• Arduino

In theory this library should be able to adapt to standard C++ iostream as well, but this is not tested or planned.

Though billed as a blocking library, each command is decomposable into a request and response. This affords us the possibility to buffer the output, and come back later to process the input. I wouldn't call this full async, but it's better than a straight up blocking library.