add myspeed integration

[torik988]

Name the integration

myspeed is an app that allow you to run periodicly some speedtest to verify the quality of your internet connexion. it produces nice looking graphs in it's own dashboard. Maby it's a good idea to add those graphs to the Homarr dashboard to have a quick look on your internet here is the project page https://github.com/gnmyt/myspeed

Please tick the boxes

• [X] You've read the docs
• [X] You've checked for duplicate issues
• [X] You're not just putting an idea out there and actually give usefull information about how to implement your module idea