fix: add module name

[Jappie3]

This MR adds the module name in zephyr/module.yml, as is stated in the official documentation:

Each Zephyr module is given a name by which it can be referred to in the build system.
The name should be specified in the zephyr/module.yml file. This will ensure the module name is not changeable through user-defined directory names or west manifest files.

[edmont]

Thanks @Jappie3, could you please address this issue upstream? https://github.com/openthread/openthread/

The current approach with this repo is to just keep a clean copy here.

[Jappie3]

will do, thanks