chore: add changelog and release action

.github/workflows/publish.yml

@@ -0,0 +1,23 @@
+name: Publish
+
+on:
+  push:
+    tags:
+      - '*'
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: erlef/setup-beam@v1
+        with:
+          version-type: strict
+          version-file: ".tool-versions"
+
+      - run: mix deps.get
+      - run: mix hex.build
+      - run: mix hex.publish --yes --replace
+        env:
+          HEX_API_KEY: ${{ secrets.HEX_API_KEY }}

.github/workflows/release.yml

@@ -0,0 +1,19 @@
+name: Release
+
+on:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  release-please:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: googleapis/release-please-action@v4
+        with:
+          release-type: elixir
+          skip-github-release: true

CHANGELOG.md

@@ -0,0 +1,6 @@
+# Changelog
+
+## 0.1.0 (2024-06-28)
+
+### Features
+First release