[router] optimize Rust compilation and development workflow (#9133)

sgl-router/.cargo/config.toml

@@ -1,6 +1,6 @@
 [build]
-rustflags = [
-]
+rustflags = []
+incremental = true
 
 [target.aarch64-apple-darwin]
 rustflags = [

sgl-router/Cargo.toml

@@ -58,3 +58,18 @@ path = "benches/request_processing.rs"
 [profile.release]
 lto = "thin"
 codegen-units = 1
+
+[profile.dev]
+opt-level = 0
+debug = true
+split-debuginfo = "unpacked"
+incremental = true
+
+
+[profile.dev.build-override]
+opt-level = 3
+codegen-units = 1
+
+[profile.dev-opt]
+inherits = "dev"
+opt-level = 1