AppStats: Connection Duration Addition to API

[alexadhy]

Did you run make format && make check? yes

Fixes #895

Changes:

• Added Connection Duration to the vpn-client

TODO:

• Adds the duration to the API when user requires visor overview / connections stats.
• Also generates the mock and readmegen

How to test this PR:

• Run the vpn-client app from the visor via UI / cli
• Run the VPN UI
• Connect to any vpn-server
• Check the connection duration field in json

[alexadhy]

@Senyoret1 can you also try this?

[mrpalide]

Good. Functionality is OK and code is clear to me.

[Senyoret1]

I did not check the code, but the functionality appears to be working well. Is the time in seconds?

[alexadhy]

I did not check the code, but the functionality appears to be working well. Is the time in seconds?

it is, is it ok ?

[Senyoret1]

Yes, seconds is ok for me

[ersonp]

Everything looks good. I just had one suggestion. We should send connection_duration here http://localhost:8000/api/visors/<pk>/apps/vpn-client/connections

[
   {
      "is_alive":true,
      "latency":57,
      "upload_speed":2283,
      "download_speed":411,
      "bandwidth_sent":215672,
      "bandwidth_received":235619,
      "error":""
   }
]

[alexadhy]

@ersonp done

[ersonp]

The code looks good and everything is working as intended.