[model-gateway] HA - Lightweight State Layer + gRPC Mesh (#14108)

Signed-off-by: Kun(llfl) <i@imux.top>
Signed-off-by: Tony Lu <tonylu@linux.alibaba.com>
Co-authored-by: Kun(llfl) <i@imux.top>

sgl-model-gateway/Cargo.toml

@@ -102,6 +102,7 @@ subtle = "2.6"
 jsonwebtoken = { version = "9.3", default-features = false, features = ["use_pem"] }
 rustpython-parser = "0.4.0"
 num-traits = "0.2"
+num-bigint = "0.4"
 image = { version = "0.25.4", default-features = false, features = ["png", "jpeg", "gif", "bmp", "ico", "tiff", "webp"] }
 ndarray = "0.16"
 base64 = "0.22"
@@ -121,6 +122,8 @@ bitflags = "2.10.0"
 once_cell = "1.21.3"
 tokio-postgres = { version = "0.7.15", features = ["runtime","with-chrono-0_4","with-serde_json-1","array-impls"] }
 deadpool-postgres = "0.14.1"
+# CRDT for Mesh state synchronization
+crdts = "7.3"
 redis = { version = "0.27.6", features = ["tokio-comp", "json", "connection-manager"] }
 deadpool-redis = "0.18.0"