Missing Measure Types

### Issue

Currently there are no defined measure types for the following cases:

- Electronic Storage (bytes etc.)
- Electronic Transfer Rates (Bytes/sec)
- Signal Attenuation (dB)
- Solar Irradiance and general Irradiance (W/m2)
- Solar Irradiation/exposure/insolation (J/m2 or Wh/m2)
- Rainfall Intensity (mm/h)
- Chromatic Dispersion Tolerance (ps/nm)

### Solution

- [ ] propose new measure types in the express definition
- [ ] update selects of measures
- [ ] update measure documentation

Start by locating the express definition and reviewing the existing measure types and measure selects. Compare the listed storage, transfer, attenuation, irradiance, irradiation, rainfall, and dispersion cases with current definitions. Done means the new measure types are proposed, measure selects are updated, and the measure documentation reflects them.

Written by the indexing model from the issue text.