add support for ovos api service and caching

[AIIX]

• Add support for Open Voice OS API service
• Add caching of results

[JarbasAl]

weather data is not valid for very long, it should expire every hour or so

could we use requests cache? its used in a few f our packages already and usually already installed, it handles all this automatically and behind the scenes

[AIIX]

weather data is not valid for very long, it should expire every hour or so

could we use requests cache? its used in a few f our packages already and usually already installed, it handles all this automatically and behind the scenes

I seem to get quite a few errors with request cache, I would prefer for now to handle our own cache mechanism, this is also because its not caching 1 single result it will cache all results "what is the current weather in london" and "what is the current weather (in current location)" as well, the caching in this is set based on lat / lon co-ordinates instead. The timeout is set as per the general weather radar systems timeout, was reading into this while setting the timeout, weather radars generally update every 15 minutes, caching any longer would mean incorrect weather results on the homescreen and when asked for weather report.

[JarbasAl]

requests cache was just a suggestion, the main take away is expiring the cache somehow after some time, maybe just save a unix timestamp together with the cache and when reading from cache check the timestamp?