When running the test suite with always capture on, a handful of tests are failing because they have multiple targets and therefore multiple GDB remote connections. The current reproducer infrastructure is capable of dealing with that.
This patch reworks the GDB remote provider to support multiple GDB remote connections, similar to how the reproducers support shadowing multiple command interpreter inputs. The provider now keeps a list of packet recorders which deal with a single GDB remote connection. During replay we rely on the order of creation to match the number of packets to the GDB remote connection.