fix: Run gossip plugin as a daemon

packages/gossip/errors.go

packages/gossip/manager.go

packages/gossip/manager_test.go

packages/gossip/server/connection.go

packages/gossip/server/handshake.go

packages/gossip/server/proto/handshake.pb.go

packages/gossip/server/proto/handshake.proto

packages/gossip/server/server.go

packages/gossip/server/server_test.go

plugins/autopeering/autopeering.go

plugins/autopeering/plugin.go

plugins/gossip/gossip.go

plugins/gossip/plugin.go