chore: add Github actions

.github/workflows/ci.yml

@@ -0,0 +1,15 @@
+name: CI
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Run clippy
+      run: cargo clippy --verbose --all-targets --all-features
+    - name: Run tests
+      run: cargo test --verbose --workspace -- --nocapture

.github/workflows/publish.yml

@@ -0,0 +1,15 @@
+name: Publish
+on:
+  push:
+    tags:
+      - 'v*'
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: katyo/publish-crates@v2
+      with:
+        registry-token: ${{ secrets.CARGO_REGISTRY_TOKEN }}
+        args: -p dogecoin
+        ignore-unpublished-changes: true