Use github workflows

Author: Denis Varlakov

.github/workflows/build.yml

@@ -0,0 +1,27 @@
+name: Build
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+  schedule:
+    - cron: '0 5 * * *'
+  workflow_call:
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Build
+        run: cargo build --verbose
+      - name: Run tests
+        run: cargo test --verbose
+      - name: Check formatting
+        run: cargo fmt --all -- --check
+      - name: Run clippy
+        run: cargo clippy -- -D clippy::all

.github/workflows/publish.yml

@@ -0,0 +1,19 @@
+name: Publish
+
+on:
+  push:
+    tags:
+      - v*.*.*
+
+jobs:
+  build:
+    uses: ZenGo-X/curv/.github/workflows/build.yml@master
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Publish crate
+        env:
+          TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}
+        run: |
+          cargo publish --token "$TOKEN"