feat: add changeset configuration for managing versioning and changelog

.changeset/config.json

@@ -0,0 +1,16 @@
+{
+    "$schema": "https://unpkg.com/@changesets/config@3.1.1/schema.json",
+    "changelog": [
+        "@changesets/changelog-github",
+        {
+            "repo": "johnie/esbuild-coffeescript"
+        }
+    ],
+    "commit": true,
+    "fixed": [],
+    "linked": [],
+    "access": "public",
+    "baseBranch": "master",
+    "updateInternalDependencies": "patch",
+    "ignore": []
+}

.github/workflows/release.yml

@@ -0,0 +1,65 @@
+name: Release
+
+on:
+  push:
+    branches:
+      - master
+
+concurrency: ${{ github.workflow }}-${{ github.ref }}
+
+jobs:
+  test:
+    name: Test
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install PNPM
+        uses: pnpm/action-setup@v4
+        with:
+          version: latest
+          run_install: false
+
+      - name: Setup Node and cache pnpm
+        uses: actions/setup-node@v4
+        with:
+          node-version: 24
+          cache: "pnpm"
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Run CI
+        run: pnpm run ci
+
+  release:
+    name: Release
+    runs-on: ubuntu-latest
+    if: ${{ github.ref == 'refs/heads/main' }}
+    needs: [test]
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install PNPM
+        uses: pnpm/action-setup@v4
+        with:
+          version: latest
+          run_install: false
+
+      - name: Setup Node and cache pnpm
+        uses: actions/setup-node@v4
+        with:
+          node-version: 24
+          cache: "pnpm"
+
+      - name: Install dependencies
+        run: pnpm install --frozen-lockfile
+
+      - name: Create Release Pull Request or Publish to npm
+        id: changesets
+        uses: changesets/action@v1
+        with:
+          publish: pnpm run release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}