rust: add README

Signed-off-by: zhongjie <[email protected]>

src/rust/README.md

@@ -0,0 +1,50 @@
+# Rust SDK for CC Trusted API in Confidential VM
+
+This is the Rust version of our VM SDK to help you using the CC Trusted API in your Rust programs.
+
+# Run CLI Samples
+
+We can try the CLI samples like this:
+
+```bash
+cd sample
+
+# get measurement
+cargo run --bin cc-sample-measurement
+
+# get event log
+cargo run --bin cc-sample-eventlog
+
+# get quote
+cargo run --bin cc-sample-quote
+
+```
+
+Or, after build successfuly, we can also run the CLIs directly:
+
+```bash
+cd sample
+
+# build the release version
+cargo build --release
+
+# get measurement
+target/release/cc-sample-measurement
+
+# get event log
+target/release/cc-sample-eventlog
+
+# get quote
+target/release/cc-sample-quote
+```
+
+
+
+# Run Test
+
+The test is simple:
+
+```bash
+cd cctrusted_vm
+cargo test
+```