chore: add crate publish workflow for pyth-lazer-client

Author: tejasbadadare

.github/workflows/publish-rust-lazer-client.yml

@@ -0,0 +1,18 @@
+name: Publish Rust package pyth-lazer-client to crates.io
+
+on:
+  push:
+    tags:
+      - rust-pyth-lazer-client-v*
+jobs:
+  publish-pyth-lazer-sdk:
+    name: Publish Rust package pyth-lazer-client to crates.io
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v2
+
+      - run: cargo publish --token ${CARGO_REGISTRY_TOKEN}
+        env:
+          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}
+        working-directory: "lazer/sdk/rust/client"