[#100] Add GH Actions for DCO, tests and linter

Add checks for DCO, local unit tests and linter

Signed-off-by: Stanislav Bogatyrev <stanislav@nspcc.ru>

.github/workflows/dco.yml

@@ -0,0 +1,21 @@
+name: DCO check
+
+on:
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  commits_check_job:
+    runs-on: ubuntu-latest
+    name: Commits Check
+    steps:
+    - name: Get PR Commits
+      id: 'get-pr-commits'
+      uses: tim-actions/get-pr-commits@master
+      with:
+        token: ${{ secrets.GITHUB_TOKEN }}
+    - name: DCO Check
+      uses: tim-actions/dco@master
+      with:
+        commits: ${{ steps.get-pr-commits.outputs.commits }}

.github/workflows/go.yml

@@ -0,0 +1,59 @@
+name: neofs-node tests
+
+on:
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - '*.md'
+  pull_request:
+    branches:
+      - master
+    paths-ignore:
+      - '*.md'
+
+jobs:
+  test:
+    runs-on: ubuntu-20.04
+    strategy:
+      matrix:
+        go: [ '1.14.x', '1.15.x' ]
+    steps:
+      - name: Setup go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ matrix.go }}
+
+      - name: Check out code
+        uses: actions/checkout@v2
+
+      - name: Cache go mod
+        uses: actions/cache@v2
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ matrix.go }}-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-${{ matrix.go }}-
+
+      - name: Get test dependencies
+        run: make test_dep
+
+      - name: Run go test
+        run: go test -coverprofile=coverage.txt -covermode=atomic ./...
+
+      - name: Codecov
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+        run: bash <(curl -s https://codecov.io/bash)
+
+  lint:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v2
+
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v2
+        with:
+          version: v1.29
+          only-new-issues: true