chore: set up jsr

.github/workflows/ci.yml

@@ -41,3 +41,26 @@ jobs:
 
       - name: Test
         run: deno task test
+
+  publish:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+      id-token: write
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup repo
+        uses: actions/checkout@v3
+
+      - name: Setup Deno
+        uses: denoland/setup-deno@v1
+        with:
+          deno-version: v1.x
+
+      - name: Publish package
+        needs: test
+        if: github.ref == 'refs/heads/main'
+        run: deno publish