swift: add MQTT client

[fsuc]

What's new

Add a implementation of a MQTT client with MQTT NIO

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How to test

1. Clone the its-client project.
2. Run the MQTTNIOClientTests which use the MQTT client in different cases.

Closes #253

[pylapp]

Il va falloir que tu ajoutes une nouvelle entrée te concernant dans le fichier CONTRIBUTORS.md

Je me demande si, dans un éventuel README, on ne pourra pas par exemple préciser qu'il faille changer de broker MQTT si les tests échouent (i.e. passer de test.mosquitto.org à mqtt.eclipseprojects.io)

[ymorin-orange]

Il va falloir que tu ajoutes une nouvelle entrée te concernant dans le fichier CONTRIBUTORS.md
[...]

Please, stick to english. ;-)

[ymorin-orange]

@fsuc You need to sign-off your commits, too:

Signed-off-by: You NAME <your@email>

(weird that @pylapp did not spot that already! ;-))

[pylapp]

@ymorin-orange I did not noticed anywhere the sign-off of commits were required (even if in the open source governance side we strongly recommend to use it, that's not mandatory yet) 😅
However I did not look for any files mentioning it 😅

[ymorin-orange]

@ymorin-orange I did not noticed anywhere the sign-off of commits were required (even if in the open source governance side we strongly recommend to use it, that's not mandatory yet) 😅
However I did not look for any files mentioning it 😅

@pylapp It was my understanding that it was required; you even once warned me about it for other contributions elsewhere... :-p

Anyway, as you say it is strongly recommended, I'd suggest we do use it.

Besides, all the other contributors do use sign-offs, as can be seen by simply running git log (although some relatively recent newcomers may forget adding it from time to time). ;-)

[pylapp]

Yep I agree. It could be interesting to define a kind of DEVELOP or CONTRIBUTING file to talk about for example DCO and uses of forks to contribute 😁

[ymorin-orange]

Yep I agree. It could be interesting to define a kind of DEVELOP or CONTRIBUTING file to talk about for example DCO and uses of forks to contribute 😁

Be my guest! ;-p

[pylapp]

LGTM