Basic release configuration using GitHub actions

Based on
https://github.com/marketplace/actions/build-and-upload-rust-binary-to-github-releases

.github/workflows/release.yml

@@ -0,0 +1,44 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - "[0-9]+.*"
+
+jobs:
+  create-release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: taiki-e/create-gh-release-action@v1
+        with:
+          # (optional)
+          changelog: CHANGELOG.md
+        env:
+          # (required)
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  upload-assets:
+    strategy:
+      matrix:
+        os:
+          - ubuntu-latest
+          - macos-latest
+          - windows-latest
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v3
+      - uses: taiki-e/upload-rust-binary-action@v1
+        with:
+          bin: difft
+          # (optional) On which platform to distribute the `.tar.gz` file.
+          # [default value: unix]
+          # [possible values: all, unix, windows, none]
+          tar: unix
+          # (optional) On which platform to distribute the `.zip` file.
+          # [default value: windows]
+          # [possible values: all, unix, windows, none]
+          zip: windows
+        env:
+          # (required)
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}