[camera] Add missing Dartdocs

[amirh]

Added missing Dartdocs for the camera plugin in order to remove the custom analysis options file (which excludes the lint rule requiring documentation for all public APIs).

@bparrishMines - I couldn't figure out the public APIs in camera_channel.dart and camera_mixins.dart can you help me how to document these? here are currently the remaining lint warnings:

  info • Document all public members at lib/new/src/common/camera_channel.dart:7:1 • (public_member_api_docs)
  info • Document all public members at lib/new/src/common/camera_channel.dart:10:7 • (public_member_api_docs)
  info • Document all public members at lib/new/src/common/camera_channel.dart:11:34 • (public_member_api_docs)
  info • Document all public members at lib/new/src/common/camera_channel.dart:13:30 • (public_member_api_docs)
  info • Document all public members at lib/new/src/common/camera_channel.dart:24:14 • (public_member_api_docs)
  info • Document all public members at lib/new/src/common/camera_channel.dart:26:15 • (public_member_api_docs)
  info • Document all public members at lib/new/src/common/camera_channel.dart:34:15 • (public_member_api_docs)
  info • Document all public members at lib/new/src/common/camera_mixins.dart:7:1 • (public_member_api_docs)
  info • Document all public members at lib/new/src/common/camera_mixins.dart:14:1 • (public_member_api_docs)

This is done to enable flutter/flutter#69309

[bparrishMines]

LGTM

Everything in the lib/new folder can be removed now. It doesn't do anything yet and I don't have any plans on continuing the work inside it.

[amirh]

LGTM

Everything in the lib/new folder can be removed now. It doesn't do anything yet and I don't have any plans on continuing the work inside it.

Deleting it is technically a breaking change, are you confident no one is using anything from there?

[bparrishMines]

LGTM
Everything in the lib/new folder can be removed now. It doesn't do anything yet and I don't have any plans on continuing the work inside it.

Deleting it is technically a breaking change, are you confident no one is using anything from there?

There's nothing in Java or Objective-C that would respond to the MethodCalls. I'm not sure what someone could use it for if most methods lead to a MissingPluginException.