Removes the indoorairquality and airquality interfaces as the
plugin isn't the right place for these sort of voncersion.
Instead, this PR specifies the individual compounds that
for the base for air quality measurements and ties them down
to export raw data.
It's the client apps responsibility to translate those values
into Air Quality Index scales based on the location of user. I.e.
while Europe would use the CAQI (Common Air Quality Index), the
US would use the EPA AQI etc.
Some plugins may support network discovery, but may not be able to clearly
identify a device and return a list of discovery results that may
be the device, but also may not. As this breaks some app flows they
will be marked as "weak" discovery and can be excluded from said setup
wizards.
NOTE: This commit does not bump the API version even though it should
to avoid merge conflicts with other branches that do bump the version.
Up until now, nymea would generate EventTypes for every StateType
as well as emit an Event (along with a StateChanged notification) for
every change. This results in a lot of duplicated network traffic
which is of not much use. The StateChanged notification contains
all the information in the Event too and nymea:app actually never
really used Events for state changes.
This commit removes the events from the ThingClass, making it a lot
smaller and stops emitting Events for state changes.
As this is breaking the behavior, the JSONRPC API major version
is bumped.
This allows JsonHandlers to set a hash for certain API calls.
Clients can use this information to load data for such a call
from a cache instead of calling the method over the network
just to get the same result as last time.
