Enable nodding (#791)

* fix issue #640 milestone: update TotalPower component in order to be compliant with the new semantic (enable=[seq]) (#668)

* Fix #712, enable nodding for Sardara and DiscosBackendProtocol (#714)

* Fix #712, enable nodding for Sardara and DiscosBackendProtocol

Fix #579, added setTsysRange function

* added setNodding implementation

* review of SRT SARDARA configurations

* review of SRT SARDARA configurations

* Fix #712, fixed the DiscosBackendProtocol

* Fix #712, completed nodding for Sardara

* Fix #579, added TsysRange for Sardara

Co-authored-by: Giuseppe Carboni <giuseppecarboni89@live.com>

* Fix #579, fixed DiscosBackendProtocol get-tpi func (#790)

* Fix #791, updated CHANGELOG.md

* Fix #791, updated CHANGELOG.md with some more details about `enable`

Co-authored-by: LorenzoMonti <lorenzomonti42@gmail.com>
Co-authored-by: Carlo Migoni <migoni@oa-cagliari.inaf.it>