Add block to calculate global radiation on tilted surface

[LauraMaier]

For models like photovoltaic models, the global radiation on the tilted surface is needed.
So far, IBPSA library only contains the following model: IBPSA.BoundaryConditions.SolarIrradiation.DirectTiltedSurface
This model calculates only the direct radiation on the tilted surface.
We want to add a model that calculates the global radiation on the tilted surface based on the global horizontal radiation (HGloHor) which is also a typical output of the TMY3 reader and a common measurement in general.

The model will base on works from:

• Erbs et al.: https://doi.org/10.1016/0038-092X(82)90302-4
• Liu et al.: https://doi.org/10.1016/0038-092X(63)90006-9
• Klucher et al.: https://doi.org/10.1016/0038-092X(79)90110-5

[LauraMaier]

I took a short discussion with @mwetter on rather using the existing models IBPSA.BoundaryConditions.SolarIrradiation.DiffuseIsotropic and IBPSA.BoundaryConditions.SolarIrradiation.DiffusePerez in combination with IBPSA.BoundaryConditions.SolarIrradiation.DirectTiltedSurface as motivation to run some short comparisons for San Francisco:
The AixLib approach is the one described above.

1. tilt = 10 °, azimuth = 0 ° for a winter week
   

2. tilt = 90 °, azimuth = -90 ° for a winter week
   

As the AixLib approach seems to result in a non-physical behavior for some parameter settings, especially for locations in the Western hemisphere, and to reduce the amount of model assumptions, I will proceed as follows:

Implement a model IBPSA.BoundaryConditions.SolarIrradiation.GlobalTiltedSurface that bases on the IBPSA.BoundaryConditions.SolarIrradiation.DiffusePerez in contrast to the suggestions above.