new sensors data

[nobless]

some code could be merged to add new sensors, after review and some modifications to not break existing ones

[Glonki]

Possible to add sensor for warm water energy usage?

[JxxIT]

Yes, that would be cool.

[nghaye]

fixed to solve the conflicts.

There are 3 added sensors : burning hours for water total energy consumption water energy consumption

A also added a fix : on my heater there is no water pressure sensor, which led to an error