[awattar] Initial contribution (#11976)

* First alpha version of the awattar binding

Signed-off-by: wolfii <wolfgang.klimt@consol.de>
Signed-off-by: Wolfgang Klimt <github@klimt.de>

* Corrected typos

Signed-off-by: wolfii <wolfgang.klimt@consol.de>
Signed-off-by: Wolfgang Klimt <github@klimt.de>

* More typos

Signed-off-by: wolfii <wolfgang.klimt@consol.de>
Signed-off-by: Wolfgang Klimt <github@klimt.de>

* Improved time handling to consider time zone.

Signed-off-by: wolfii <wolfgang.klimt@consol.de>
Signed-off-by: Wolfgang Klimt <github@klimt.de>

* Corrected logical time problem, start adding nextprice thing

Signed-off-by: wolfii <wolfgang.klimt@consol.de>
Signed-off-by: Wolfgang Klimt <github@klimt.de>

* Added support for Austria

Signed-off-by: wolfii <wolfgang.klimt@consol.de>
Signed-off-by: Wolfgang Klimt <github@klimt.de>

* Use List instead of Set

Signed-off-by: wolfii <wolfgang.klimt@consol.de>
Signed-off-by: Wolfgang Klimt <github@klimt.de>

* Minor corrections

Signed-off-by: Wolfgang Klimt <github@klimt.de>

* Removed unneeded handler, corrected fetching of prices

Signed-off-by: Wolfgang Klimt <github@klimt.de>

* Added i18n, updated documentation

Signed-off-by: Wolfgang Klimt <github@klimt.de>

* Corrected pom.xml after rebase

Signed-off-by: Wolfgang Klimt <github@klimt.de>

* Updated version to 3.3.0-SNAPSHOT

Signed-off-by: Wolfgang Klimt <github@klimt.de>

* Corrected findings of Code analysis tool

Signed-off-by: Wolfgang Klimt <github@klimt.de>

* Updated copyright notice

Signed-off-by: Wolfgang Klimt <github@klimt.de>

* Updates to get rid of compiler warnings

Signed-off-by: Wolfgang Klimt <github@klimt.de>

* Worked on review comments from @fwolter

Obeyed most of the review comments. Exceptions:

* binding is already added to bom/openhab-addons/pom.xml (at least I found it there and there was a commit notice in git log)
* mvn license:format brought back 2021, so I manually set everything to 2022. Should I try to rebase my whole branch?
* In two places the binding needs to adjust to minute boundaries, hence scheduleWithFixedDelay will not work.
* I removed empty trailing lines, but mvn spotless:apply brought them back
* The OhInfXmlUsageCheck seems to be wrong.
* The ConstantNameCheck in AwattarUtil seems to be mislead by the fact that all members of the class are static, including the logger. From my point of view it is not a real "constant".

Signed-off-by: Wolfgang Klimt <github@klimt.de>

* Updated Readme to match code changes

Signed-off-by: Wolfgang Klimt <github@klimt.de>

* Further work on review comments from @fwolter

Signed-off-by: Wolfgang Klimt <github@klimt.de>

* Corrected config definition

Signed-off-by: Wolfgang Klimt <github@klimt.de>

* Changed Copyright to 2022

Signed-off-by: Wolfgang Klimt <github@klimt.de>

* Review comments from @fwolter. Improved timezone handling

Signed-off-by: Wolfgang Klimt <github@klimt.de>

Co-authored-by: wolfii <wolfgang.klimt@consol.de>

bundles/pom.xml

@@ -61,6 +61,7 @@
     <module>org.openhab.binding.autelis</module>
     <module>org.openhab.binding.automower</module>
     <module>org.openhab.binding.avmfritz</module>
+    <module>org.openhab.binding.awattar</module>
     <module>org.openhab.binding.benqprojector</module>
     <module>org.openhab.binding.bigassfan</module>
     <module>org.openhab.binding.bluetooth</module>