Add status message for speeds and occupancy classified by vehicle type

[emiltin]

S0201, S0202 and S0203 delivers count, speed and occupancy for all vehicle types, for a single detector logic
S0204 delivers traffic counts classified by vehicle type, for a single detector logic
S0205-S0208 delivers the same, but for all detector logics

But there is no way to get speed and occupancy by vehicle type. I suggest adding status message for this.

We could continue in the current vein:

S0209: speed by vehicle type, for a single detector logic
S0210: occupancy by vehicle, for a single detector logic
S0211: speed by vehicle type, for all detector logics
S0212: occupancy by vehicle, for all detector logics,

Or think about unifying all these messages related to fetching traffic data, either in this TLC sxl, or possibly as part of a new module-based approach to SXLs.