Replace token in camera.push with webhook

[dgomes]

Description:

This moves from the temporary webhook solution to the webhook solution in #16817

Related issue (if applicable): fixes #16817

Pull request in home-assistant.io with documentation (if applicable): home-assistant/home-assistant.io#7451

Example entry for configuration.yaml (if applicable):

camera:
  - platform: push
    name: cam1
    timeout: 10
    cache: 5
    webhook_id: my_custom_webhook_id 

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated in home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• New dependencies have been added to the REQUIREMENTS variable (example).
• New dependencies are only imported inside functions that use them (example).
• New or updated dependencies have been added to requirements_all.txt by running script/gen_requirements_all.py.
• New files were added to .coveragerc.

If the code does not interact with devices:

• Tests have been added to verify that the new code works.

[balloob]

not used

[balloob]

'push' ? Pass the entity name.

[balloob]

file.read() is doing I/O

[dgomes]

it's memory, it's not from the filesystem. file is the property that contains the image bytes received by the webhook.

[balloob]

Why entity id ? This will be shown in the UI, let's do name?

[dgomes]

sorry, you suggested entity name, I read entity id :(