Add etcd as a service discovery mechanism

go.sum

@@ -288,8 +288,8 @@ github.com/openimsdk/gomake v0.0.13 h1:xLDe/moqgWpRoptHzI4packAWzs4C16b+sVY+txNJ
 github.com/openimsdk/gomake v0.0.13/go.mod h1:PndCozNc2IsQIciyn9mvEblYWZwJmAI+06z94EY+csI=
 github.com/openimsdk/protocol v0.0.65 h1:SPT9qyUsFRTTKSKb/FjpS+xr6sxz/Kbnu+su1bxYagc=
 github.com/openimsdk/protocol v0.0.65/go.mod h1:OZQA9FR55lseYoN2Ql1XAHYKHJGu7OMNkUbuekrKCM8=
-github.com/openimsdk/tools v0.0.49-alpha.14 h1:1WigfCZhLQRYDdBjZRhf2ksFM4CWmMWd1y6RC36T02A=
-github.com/openimsdk/tools v0.0.49-alpha.14/go.mod h1:g7mkHXYUPi0/8aAX8VPMHpnb3hqdV69Jph+bXOGvvNM=
+github.com/openimsdk/tools v0.0.49-alpha.15 h1:m9bvSLBnqLZ60pkeB2lvYOsprLnLphaFetoZCS75q0E=
+github.com/openimsdk/tools v0.0.49-alpha.15/go.mod h1:g7mkHXYUPi0/8aAX8VPMHpnb3hqdV69Jph+bXOGvvNM=
 github.com/pelletier/go-toml/v2 v2.1.0 h1:FnwAJ4oYMvbT/34k9zzHuZNrhlz48GB3/s6at6/MHO4=
 github.com/pelletier/go-toml/v2 v2.1.0/go.mod h1:tJU2Z3ZkXwnxa4DPO899bsyIoywizdUvyaeZurnPPDc=
 github.com/pierrec/lz4/v4 v4.1.21 h1:yOVMLb6qSIDP67pl/5F7RepeKYu/VmTyEXvuMI5d9mQ=