Downdetector parser

[hrichiksite]

Invoke by: !downdetector service-name

Example Invocation: !down detector aws This would result in a link formation of https://downdetector.com/search/?q=aws, when clicked would redirect to https://downdetector.com/status/aws-amazon-web-services.

More work such as mapping a few well-known services to their pages is planned.

The code in the initial commits is used as base, more work is pending.

Note: Downdetector.com focuses on providers from the USA.

solving https://github.com/ServiceNowDevProgram/SlackerBot/issues/101

[hrichiksite]

Added a few mapped services.

service	link
aws	https://downdetector.com/status/aws-amazon-web-services/
doordash	https://downdetector.com/status/doordash/
spectrum	https://downdetector.com/status/spectrum/
diablo	https://downdetector.com/status/diablo/
servicenow	https://downdetector.com/status/service-now/
youtube	https://downdetector.com/status/youtube/
at&t	https://downdetector.com/status/att/
verizon	https://downdetector.com/status/verizon/
tmobile	https://downdetector.com/status/t-mobile/
gcp	https://downdetector.com/status/google-cloud/
google	https://downdetector.com/status/google/
googledrive	https://downdetector.com/status/google-drive/
waze	https://downdetector.com/status/waze/
x	https://downdetector.com/status/twitter/
gmail	https://downdetector.com/status/gmail/
office365	https://downdetector.com/status/microsoft-365/
azure	https://downdetector.com/status/windows-azure/
teams	https://downdetector.com/status/teams/
reddit	https://downdetector.com/status/reddit/
discord	https://downdetector.com/status/discord/
downdetector	https://downdetector.com/status/downdetector/