add CI to build contract

.github/workflows/build.yml

@@ -0,0 +1,28 @@
+---
+  name: Solana_Build
+
+  on: [push]
+
+  jobs:
+    Test:
+      runs-on: [ubuntu-22.04]
+      env:
+        RUST_VERSION: 1.77.0
+        SOLANA_VERSION: 1.18.8
+
+      steps:
+        - name: Checkout
+          uses: actions/checkout@v2
+
+        - name: Setup Rust
+          uses: actions-rs/toolchain@v1
+          with:
+            toolchain: ${{ env.RUST_VERSION }}
+            override: true
+            components: rustfmt, clippy
+
+        - name: Install Anchor
+          run: cargo install --git https://github.com/coral-xyz/anchor --tag v0.29.0 anchor-cli --locked
+
+        - name: Build
+          run: anchor build