Reddit Notification Support

[caronc]

Description:

Related issue (if applicable): n/a

Added Reddit Support

Account Setup

1. Visit https://www.reddit.com/prefs/apps and scroll to the bottom
2. Click on the button that reads 'are you a developer? create an app...'
3. Set the mode to script,
4. Provide a name, description, and redirect uri (it can be anything).
5. Save your configuration
6. Once the bot is saved, you'll be given a ID (next to the the bot name) and a Secret.

• The App ID will look something like this: YWARPXajkk645m
• The App Secret will look something like this: YZGKc5YNjq3BsC-bf7oBKalBMeb1xA
• The App will also have a location where you can identify the users/developers who can also use this key. By default it's already configured to be yours. You will need to use the user/pass of one of the accounts identified here as well to use the posting capabilities.

Syntax:

• reddit://{user}:{password}@{app_id}/{app_secret}/{subreddit}
• reddit://{user}:{password}@{app_id}/{app_secret}/{subreddit_1}/{subreddit_2}/{subreddit_N}

New Service Completion Status

• apprise/plugins/NotifyReddit.py
• setup.py
  • add new service into the keywords section of the setup() declaration
• README.md
  • add entry for new service to table (as a quick reference)
• packaging/redhat/python-apprise.spec
  • add new service into the %global common_description

Checklist

• The code change is tested and works locally.
• There is no commented out code in this PR.
• No lint errors (use flake8)
• 100% test coverage