HDMI CEC - support for devices and commands (home-assistant#4781)

* cec client object

* cec command structure

* autodetect source

* volume support and native source select

* switch device

* media player device

* detecting of state

* friendly names

* hdmi cec properties

* presence detection

* simplified callbacks

* stable names

* renamed methods

* code cleanup

* name with vendor

* fixed standby call name

* fake standby/poweron

* domain switch

* domain switch

* async updating

* update separated

* cec -> hass event bridge

* fixed name generation

* code cleanup

* code cleanup

* icon constants

* code cleanup

* do not register unavailable devices

* discovery of deevices

* code cleanup

* cec device discovery

* moved method implementation into child

* service descriptions

* service descriptions

* service descriptions

* changed entity init sequence

* logging cleanup

* add remove as job

* closing cec, no service schemas

* correct iterate over dictionary

* Volume by commands

* threading

* logging minimized

* get load out of main thread

* naming cleanup

* get load out of main thread

* optimized discovery

* async where possible

* cleanup logging, constructors first

* pydoc

* formatting

* no async_update from out of loop
no hiding entities
removed redundant device_state_attributes
async updating presence

* no async

* working async cec

* cec in thirdparty lib

* cec initialized oudsice

* working without SIGSEGV

* rollbacked file changed by mistake

* sending of commands

* working with ha

* using hass loop and device driven updates

* version up

* version up

* Command types in pycec, cleanup for HA integration

* Removed media player, state moved to switch

* service descriptions

* requirements: pyCEC

* line width to 79

* doc

* doc

* overindentation solved

* HDMI to uppercase

* minimal dependency on cec

* removed unwanted line

* doc wording

* margin 79

* line continuation indent

* imperative doc

* lint: indentation

* fixed overindented

* fixed overindented

* fixed overindented

* fixed overindented

* order of imports

* PEP8

* keep signature of overriding

* removed redundant blank line

* fixed update call method (#4)

* Preparation for merge to upstream (#5)

* newer version of pyCEC
* updated services.yaml
* fixed lint scrpt to operate only on python files

* pycec version up

* update services

* no coverage report

* exclude non python files from lint

* lint only on python files

* Dev (#6)

* reordered
* sending nonserialized data through hass.data
* code formatting
* code formatting
* import order

* Dev (#7)

* newer version of pyCEC
* updated services.yaml
* fixed lint scrpt to operate only on python files

* pycec version up

* update services

* no coverage report

* exclude non python files from lint

* lint only on python files

* reordered

* sending nonserialized data through hass.data

* import order

* fixed object handling

* code formatting

* Backwards compatibility of hdmi_cec (#10)

* services:
power_on
standby
active_source

* new version of pyCEC (#12)

* newer version of pyCEC

* devices config (#13)

* getting device name from config

* shutdown fix (#14)


* correct call on shutdown

* remove misplaced annotations (#15)

* Preparation for merge to upstream (#5)

* newer version of pyCEC
* updated services.yaml
* reordered
* sending nonserialized data through hass.data
* services:
power_on
standby
active_source
* code formatting
* getting device name from config
* correct call on shutdown

* pyCEC version 0.3.6 (#18)

* newer version of pyCEC
* updated services.yaml
* sending nonserialized data through hass.data
* services:
** power_on
** standby
** active_source
* getting device name from config
* correct call on shutdown
* fork new thread on multicore machines
* support both config schemas: original and new (#16)
* volume press and release support (#17)

* support for media_player (#21)

* accept hexadecimal format of commands
* support for media player
* platform customization
* type constants

* Dev (#23)

* accept hexadecimal format of commands
* support for media player
* platform customization

* TCP CEC support (#24)

* accept hexadecimal format of commands
* support for media player
* platform customization
* preparing tcp support

* volume handling (#25)

* Incorporated CR remarks (#26)

* cleanup imports
* cleanup and enhance services description
* removed unwanted file

* implemented CR remarks (#27)

* pyCEC v0.4.6
* pined dependency version
* tighten service schemas

* requirements (#28)

.coveragerc

@@ -214,6 +214,7 @@ omit =
     homeassistant/components/media_player/emby.py
     homeassistant/components/media_player/firetv.py
     homeassistant/components/media_player/gpmdp.py
+    homeassistant/components/media_player/hdmi_cec.py
     homeassistant/components/media_player/itunes.py
     homeassistant/components/media_player/kodi.py
     homeassistant/components/media_player/lg_netcast.py
@@ -356,6 +357,7 @@ omit =
     homeassistant/components/switch/digitalloggers.py
     homeassistant/components/switch/dlink.py
     homeassistant/components/switch/edimax.py
+    homeassistant/components/switch/hdmi_cec.py
     homeassistant/components/switch/hikvisioncam.py
     homeassistant/components/switch/hook.py
     homeassistant/components/switch/kankun.py