Branch off GHE and add dedicated circulation pump for GHE

[JingWang-CUB]

Expected Behavior

Each GHE should have its own branch connected to the main loop with a dedicated circulation pump. The controller determines whether the GHE branch is activated or not.

Actual Behavior

Steps to Reproduce

Version Information

Modelica Buildings Library: X.Y.Z
Modelica Standard Library: X.Y.Z
TEASER: X.Y.Z
Python: X.Y.Z