Add a simple test broker to correo (as plugin)

[farion]

To start up fast with MQTT, it would be nice to have an option to start a simple broker from within correo.

My proposal is to use Moquette as it is written in java and can be used embedded: https://github.com/moquette-io/moquette

• Plugin must add a further menu point to tools "Local Broker". (new extension point required)
• This will open a small window with at least these options: "Port" defaults to 1883, "Start broker on CorreoMQTT start", "Start"-Button. Maybe some more options like SSL and SSL-Port ... depends on what moquette is able to do.
• As long as the broker runs there is a new bar above the tabs. "Local broker is running on port xxxx" + "Stop"-button (new extension point required). If the broker is running, the menu point must also change to "Stop local broker" of course.
• "Port", "Start broker on CorreoMQTT start" must be persisted (use a dedicated file, as it is a plugin only thing)

[raujonas]

@farion can I work on this issue next? 😊 If yes, could you please open a new repo for the plugin?

[farion]

@raujonas Sure you can :). Regarding the new extension point for menus given by plugins: @al-salah is working on EXXETA/correomqtt-plugins#2 and needs this too, so we need some coordination.
As a second extension point is required for this ticket and I would only do one additional release caused by extension points I would propose to use a new branch together with these additional extension points.

[raujonas]

@farion @al-salah okay good to know, I think I could just pick these changes from the new branch (https://github.com/al-salah/correomqtt/tree/AsyncAPI_Integration_plugin) right?.

@farion could you please create a new repo for the plugin under the exxeta group?

[ghost]

@farion i also need a repo for asyncapi pulgin (:

@raujonas yes you can theoretically pick the changes for the additional extension points from there

[raujonas]

@farion I'm having issues with integrating Moquette because JCenter is not available anymore: moquette-io/moquette#565 (comment)

I'm not sure how I should handle this now, there are some repos with older versions on maven central but they are not public. Could you please give me a hint?

[raujonas]

@farion What about this: https://github.com/hivemq/hivemq-community-edition#maven
Can also be used with maven, what do you think?