Add the example for WasmEdge + Kafka / Redpanda + MySQL application to take messages from a queue and save into a database table.

Signed-off-by: Michael Yuan <michael@secondstate.io>

wasmedge-kafka-mysql/etl/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "kafka"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+anyhow = "1.0.65"
+mega_etl = {git = "https://github.com/second-state/MEGA.git"}
+tokio_wasi = {version = '1.21', features = ["rt", "macros"]}
+env_logger = "0.9"
+log  = "0.4"
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+http_req_wasi  = "0.10"
+lazy_static = "1.4.0"