ci: enable github actions & dependabot

.github/dependabot.yml

@@ -0,0 +1,20 @@
+version: 2
+updates:
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    labels:
+      - "dependencies"
+    commit-message:
+      prefix: "feat"
+      include: "scope"
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"
+    labels:
+      - "dependencies"
+    commit-message:
+      prefix: "chore"
+      include: "scope"

.github/workflows/build.yml

@@ -0,0 +1,20 @@
+name: build
+
+on:
+  push:
+    branches:
+      - "main"
+    tags:
+      - "v*"
+  pull_request:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+        with:
+          go-version: stable
+      - run: go build -v .
+      - run: go test -v .

.github/workflows/lint.yml

@@ -0,0 +1,20 @@
+name: golangci-lint
+on:
+  push:
+    tags:
+      - v*
+    branches:
+      - main
+  pull_request:
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+        with:
+          go-version: stable
+      - uses: golangci/golangci-lint-action@v3
+        with:
+          skip-go-installation: true