chore(ci): add ci file (#8)

* chore(ci): add ci file

* chore(clippy): make clippy happy

.github/workflows/ci.yml

@@ -0,0 +1,31 @@
+on: [push, pull_request]
+
+name: Sn os
+jobs:
+  rustfmt:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Rust Toolchain Setup
+        run: rustup show
+      - uses: Swatinem/rust-cache@v2
+      - name: Check format
+        run: cargo fmt --all -- --check
+  clippy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Rust Toolchain Setup
+        run: rustup show
+      - uses: Swatinem/rust-cache@v2
+      - name: Check lint
+        run: cargo clippy
+  tests:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Rust Toolchain Setup
+        run: rustup show
+      - uses: Swatinem/rust-cache@v2
+      - name: Run tests
+        run: cargo test

.gitignore

@@ -1,6 +1 @@
 /target
-/Cargo.lock
-
-build/*
-!build/fact.json
-!build/.gitkeep