feat: string deserialization for prost enums (#2316)

Use pbjson to support string deserialization for enum fields

This allows TOML configs like:
    chainType = "Inbound"
instead of:
    chainType = 1

- Maintain backward compatibility with integer values
- Default serialization format is now string

easytier/Cargo.toml

@@ -127,9 +127,11 @@ uuid = { version = "1.5.0", features = [
 once_cell = "1.18.0"
 
 # for rpc
-prost = "0.13.5"
-prost-wkt = "0.6"
-prost-wkt-types = "0.6"
+prost = "0.14.3"
+prost-reflect = { version = "0.16.4", default-features = false, features = ["derive"] }
+prost-wkt-types = "0.7.1"
+pbjson = "0.9.0"
+
 anyhow = "1.0"
 
 url = { version = "2.5", features = ["serde"] }
@@ -226,10 +228,6 @@ zstd = { version = "0.13", optional = true }
 
 kcp-sys = { git = "https://github.com/EasyTier/kcp-sys", rev = "d7427c22d764deb1860a7d37acc446ed5033464c", optional = true }
 
-prost-reflect = { version = "0.14.5", default-features = false, features = [
-    "derive",
-] }
-
 # for http connector
 http_req = { git = "https://github.com/EasyTier/http_req.git", default-features = false, features = [
     "rust-tls",
@@ -320,9 +318,9 @@ cfg_aliases = "0.2.1"
 indoc = "2.0"
 globwalk = "0.8.1"
 regex = "1"
-prost-build = "0.13.5"
-prost-wkt-build = "0.6"
-prost-reflect-build = { version = "0.14.0" }
+prost-build = "0.14.3"
+prost-reflect-build = "0.16.0"
+pbjson-build = "0.9.0"
 proc-macro2 = "1"
 quote = "1"
 thunk-rs = { git = "https://github.com/easytier/thunk.git", default-features = false, features = [