Setup a consistent path scheme for tasks on the website

[fozziethebeat]

We should have a sensible hierarchy that will keep urls consistent.

I'm thinking something like:

• /create/[task_type] for anything where someone has to write free-form responses (namely where the update type is text_reply_to_post).
• /evaluate/[task_type] for anything where someone has to rate or rank a response.

[jasonmhead]

If we can define input goals I could help develop and document.

At a higher level it could be good to use the OpenAPI standard for the webside of things too perhaps and use tools like https://openapi-generator.tech/

[fozziethebeat]

I think this is almost done with a PR i have in review. This was more just to ensure we have some documentation and simpler URL patterns for the client side.