feat: add klog

backend/Cargo.toml

@@ -0,0 +1,18 @@
+[package]
+name = "klog-backend"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+klog-types = { path = "../types" }
+axum = { version = "0.8.9", features = ["multipart"] }
+tokio = { version = "1.52.1", features = ["full"] }
+serde_json = "1.0.149"
+reqwest = { version = "0.13.3", features = ["form", "json"] }
+sha2 = "0.11.0"
+zip = "8.6.0"
+hex = "0.4.3"
+tower-http = { version = "0.6.8", features = ["trace"] }
+serde = { version = "1.0.228", features = ["derive"] }
+tracing = "0.1.44"
+tracing-subscriber = { version = "0.3.23", features = ["env-filter", "fmt", "json"] }