Jewish calendar sensor (#16393)

* Initial commit for  jewish calendar sensor

* Make check for logging errors into it's own function

* Can't use f-strings as we need to support python3.5

* Implement basic functionality: printing of date

* Update requirements_all.txt

* Allow user to specify date for sensor

* Add hdate to test requirements

* Update to match pull request

* Support date output in hebrew

* Limit languages to english and hebrew

* Add name back to sensor

* Change icon to be calendar-today

* Add multiple sensors

* Fix tests

* Make Hound happy, remove unused imported class

* hdate expects datetime.date not datetime.datetime

* Return sensor name

* Times should be returned as time object, not datetime

* Add myself to codeowners for jewish calendar component

* Return actual reading, not index

* Add more tests. Currently failing.

Will need to update hdate API and version before continuing.

* Fix weekly portion test

* Make all tests pass

* Make travis happy and add a test so it doesnt happen again

* Remove defaults in __init__ method

* Change sensor state variable to local variable in update() method

* Minor changes

script/gen_requirements_all.py

@@ -55,6 +55,7 @@ TEST_REQUIREMENTS = (
     'ha-ffmpeg',
     'haversine',
     'hbmqtt',
+    'hdate',
     'holidays',
     'home-assistant-frontend',
     'homematicip',