add github actions workflows

.github/dependabot.yml

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+version: 2
+updates:
+- package-ecosystem: gomod
+  directory: "/"
+  schedule:
+    interval: daily
+    time: "20:00"
+  open-pull-requests-limit: 10
+  reviewers:
+    - usk81
+  assignees:
+    - usk81
+# Fetch and update latest `github-actions` pkgs
+- package-ecosystem: github-actions
+  directory: '/'
+  schedule:
+    interval: daily
+    time: '00:00'
+  open-pull-requests-limit: 10
+  reviewers:
+    - usk81
+  assignees:
+    - usk81
+  commit-message:
+    prefix: fix
+    prefix-development: chore
+    include: scope

.github/release-drafter.yml

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+name-template: 'v$RESOLVED_VERSION'
+tag-template: 'v$RESOLVED_VERSION'
+categories:
+  - title: 'feature'
+    labels:
+      - 'feature'
+  - title: 'bugfix'
+    labels:
+      - 'bugfix'
+change-template: '- $TITLE (#$NUMBER) @$AUTHOR'
+version-resolver:
+  major:
+    labels:
+      - 'major'
+  minor:
+    labels:
+      - 'minor'
+  patch:
+    labels:
+      - 'patch'
+  default: patch
+exclude-labels:
+  - 'skip-changelog'
+template: |
+  ## Changes
+
+  $CHANGES

.github/workflow/pr.yml

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+name: review
+on:
+  - pull_request
+
+jobs:
+  golangci:
+    name: linter
+    strategy:
+      matrix:
+        go-version: [1.18.x,1.19.x]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Install Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: ${{ matrix.go-version }}
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v3.2.0
+        with:
+          # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
+          version: v1.48.0
+          # Optional: golangci-lint command line arguments.
+          args: --enable=goimports
+          skip-go-installation: true
+  test:
+    name: test
+    strategy:
+      matrix:
+        go-version: [1.18.x,1.19.x]
+        os: [ubuntu-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Install Go
+      uses: actions/setup-go@v3
+      with:
+        go-version: ${{ matrix.go-version }}
+    - name: Checkout code
+      uses: actions/checkout@v3
+    - uses: actions/cache@v3
+      with:
+        path: ~/go/pkg/mod
+        key: ${{ matrix.os }}-go-${{ hashFiles('**/go.sum') }}
+        restore-keys: |
+          ${{ matrix.os }}-go-
+    - name: Test
+      run: go test -v ./...

.github/workflow/release-drafter.yml

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+name: Release Drafter
+
+on:
+  push:
+    # branches to consider in the event; optional, defaults to all
+    branches:
+      - main
+
+jobs:
+  update_release_draft:
+    runs-on: ubuntu-latest
+    steps:
+      # Drafts your next Release notes as Pull Requests are merged into "master"
+      - uses: release-drafter/release-drafter@v5
+        with:
+          # (Optional) specify config name to use, relative to .github/. Default: release-drafter.yml
+          config-name: release-drafter.yml
+          publish: false
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}