Add new component fritzbox binary_sensor (#17057)

* Add new component fritzbox binary_sensor

Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>

* fix failed flake8 test

Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>

* add new file to .coveragerc

Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>

* use wildcard to cover all platforms

Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>

* remove polling because polling is true by default

Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>

* add blank line to keep imports ordered

Signed-off-by: Heiko Thiery <heiko.thiery@gmail.com>

* Minor changes