Extend request/response logging (dstackai#2265)

Server:
- Log response status codes in debug logs.

CLI:
- Log response headers and bodies for any failed
  requests in debug logs.
- Show more human-readable errors on 403
  responses. Such responses are expected after
  rotating tokens or switching servers.
- Show more detailed errors on unexpected
  responses.

Extend request/response logging (dstackai#2265)

Server:
- Log response status codes in debug logs.

CLI:
- Log response headers and bodies for any failed
  requests in debug logs.
- Show more human-readable errors on 403
  responses. Such responses are expected after
  rotating tokens or switching servers.
- Show more detailed errors on unexpected
  responses.

Handle stop_duration backward compatibility for fleet spec (dstackai#…

…2243)

Implement volumes force detach (dstackai#2242)

* Add comments on termination

* Simplify job termination and fix instance locking

* Fix tests

* Implement volume force detach

* Fix duration parameters parsing

* Filter our instances with detaching volumes

* Add docs on Force detach

Fix Internal Server Error in services w/o gateways (dstackai#2225)

Add more project URLs on PyPI (dstackai#2215)

Add more project URLs on PyPI (dstackai#2215)

Add Vultr Concepts and Reference pages (dstackai#2186)

Co-authored-by: Bihan  Rana <[email protected]>

Update PyPI Development Status classifier (dstackai#2192)

[Docs] Many docs improvements (dstackai#2171)

Co-authored-by: jvstme <[email protected]>