Move documentation to https://docs.katie.qa

[michaelwechner]

Move current documentation to separate gitgub repo, e.g. "katie-docs"

ls src/main/webapp/*html src/main/webapp/about.html src/main/webapp/grounded-qa-integration.html src/main/webapp/my-katie.html src/main/webapp/demo.html src/main/webapp/index.html src/main/webapp/public-knowledge.html src/main/webapp/discord.html src/main/webapp/jobs.html src/main/webapp/read-answer.html src/main/webapp/email-integration.html src/main/webapp/katie4faq.html src/main/webapp/slack.html src/main/webapp/getting-started-with-slack.html src/main/webapp/matrix.html src/main/webapp/topdesk-integration.html src/main/webapp/getting-started.html src/main/webapp/ms-teams.html src/main/webapp/webhooks-guide.html

to https://docs.katie.qa