github: Add simple linter and test actions.

.github/workflows/build.yml

@@ -0,0 +1,33 @@
+name: Build and Test
+on: [push, pull_request]
+permissions:
+  contents: read
+
+jobs:
+  build:
+    name: Go CI
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        go: ["1.22", "1.23"]
+    steps:
+      - name: Check out source
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 #v4.2.2
+      - name: Set up Go
+        uses: actions/setup-go@f111f3307d8850f501ac008e886eec1fd1932a34 #v5.3.0
+        with:
+          go-version: ${{ matrix.go }}
+      - name: Use lint cache
+        uses: actions/cache@1bd1e32a3bdc45362d1e726936510720a7c30a57 #v4.2.0
+        with:
+          path: |
+            ~/.cache/golangci-lint
+          key: go-lint-${{ matrix.go }}-${{ hashFiles('./go.sum') }}
+          restore-keys: go-lint-${{ matrix.go }}
+      - name: Install Linters
+        run: "go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.0.2"
+      - name: Build
+        run: go build ./...
+      - name: Test
+        run: |
+          sh ./run_tests.sh

.golangci.yml

@@ -0,0 +1,29 @@
+version: "2"
+run:
+  timeout: 10m
+linters:
+  default: none
+  enable:
+    - asciicheck
+    - bidichk
+    - durationcheck
+    - copyloopvar
+    - govet
+    - grouper
+    - ineffassign
+    - makezero
+    - nosprintfhostport
+    - reassign
+    - rowserrcheck
+    - sqlclosecheck
+    - staticcheck
+    - tparallel
+    - unconvert
+  settings:
+    staticcheck:
+      checks:
+          - S1*
+formatters:
+  enable:
+    - gofmt
+    - goimports

run_tests.sh

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+#!/usr/bin/env bash
+set -ex
+
+GV=$(go version | sed "s/^.*go\([0-9.]*\).*/\1/")
+echo "Go version: $GV"
+
+# Run `go mod tidy` and fail if the git status of go.mod and/or
+# go.sum changes. Only do this for the latest Go version.
+if [[ "$GV" =~ ^1.23 ]]; then
+	MOD_STATUS=$(git status --porcelain go.mod go.sum)
+	go mod tidy
+	UPDATED_MOD_STATUS=$(git status --porcelain go.mod go.sum)
+	if [ "$UPDATED_MOD_STATUS" != "$MOD_STATUS" ]; then
+		echo "running 'go mod tidy' modified go.mod and/or go.sum"
+	git diff --unified=0 go.mod go.sum
+		exit 1
+	fi
+fi
+
+# run tests
+env GORACE="halt_on_error=1" go test -race -short ./...
+
+# check linters
+golangci-lint -c ./.golangci.yml run