updated the bldg diagrams for SAREF 2.0

according to saref 2.0

OnToology update

Removed the OWL API comment.

added the Uris where the ontologies are published

OnToology update

Change URIs to w3id
https://w3id.org/def/saref4envi
https://w3id.org/def/saref4bldg

OnToology update

OnToology update

Updated the diagrams for the SAREF2.0 versions

OnToology update

Change PeriodMeasurement -> TransmissionPeriod
Change URI http://saref.linkeddata.es/def/envi/example1 ->
http://saref.linkeddata.es/data/envi/example1

Added disjoints

hasFrequencyMeasurment renamed

diagrams updated and examples updated

Turtle code and diagrams for the envi and bldg examples

First version of BDLD and ENVI examples diagrams.

The code for the ENVI is left.

diagramas and ttl

Added diagrams and partial code for the building example.

Still need to implement all properties and datatypes (all for energy
and some for location).

Still need to remove the properties and datatypes not used. Don’t know
what to do about the hierarchies, whether to keep only the last class
or the hierarchy (so far the hierarchy is keep only for the branch used)