cyberlis

Add redirect_slashes parameter to FastAPI and pass it to router

14

Right now `redirect_slashes` parameter in sub routers created with `APIRouter` ignored, because only main router's `redirect_slashes` inside FastAPI class is taken into account. FastAPI class creates new router without `redirect_slashes`...

We can have potential normal-queue starvation if we have the same amount of tasks in both priority and normal queue This fix tries to address this issue. WIP, no merge

Link previews

2

### Describe your feature: Link previews (link cards) like in telegram and other messengers Example ### Why do you think it is useful: It helps to search for relevant content