Apidaora

- Add docs for background tasks with lock args and redis

- Create the feature task background lock by args

- Rename the feature background task single running to background task lock

- Fix middleware request parsing

- Create single running feature for background tasks

- Create prevent request middleware

- Fix merge of general middlewares and route middlewares

- Improve Request class

- Fix asgi headers for h11 http parser

- Fix cors middleware

- Improve post routing middleware