all: more linters (#24783)

This enables the following linters

- typecheck
- unused
- staticcheck
- bidichk
- durationcheck
- exportloopref
- gosec

WIth a few exceptions.

- We use a deprecated protobuf in trezor. I didn't want to mess with that, since I cannot meaningfully test any changes there.
- The deprecated TypeMux is used in a few places still, so the warning for it is silenced for now.
- Using string type in context.WithValue is apparently wrong, one should use a custom type, to prevent collisions between different places in the hierarchy of callers. That should be fixed at some point, but may require some attention.
- The warnings for using weak random generator are squashed, since we use a lot of random without need for cryptographic guarantees.

p2p/simulations/http.go

@@ -442,6 +442,7 @@ func (s *Server) StreamNetworkEvents(w http.ResponseWriter, req *http.Request) {
 			}
 		}
 		for _, conn := range snap.Conns {
+			conn := conn
 			event := NewEvent(&conn)
 			if err := writeEvent(event); err != nil {
 				writeErr(err)