Heat Meter abbreviations

[TPD61]

Suggest changing descriptions/abbreviations as follows:

Current:
meter -heat meter HM
Propose:
meter - Thermal Energy Meter TEM

Current:
meter -heat meter (virtual) HMV
Propose:
meter - Thermal Energy Meter (virtual) TEMV

For Heat Meters on Chilled Water (CHW) systems, using "heat" reference is not sensible and instead the generic term "thermal" caters for meters on either Low Temperature Hot Water (LTHW) or CHW systems or Domestic Hot Water (DHW) systems.

[pisuke]

This is sensible so we'll add TEM and TEMV for more generic use cases, however we cannot replace HM and HMV as they are terms that are very ingrained and used in the industry, especially in European applications. Functionally, a heat meter and a thermal energy meter are the same thing.