chore: replace manual PyPI workflow with release-please

Automates versioning, changelogs, and PyPI publishing based on
conventional commits. Pushes to main now open/update a Release PR
instead of attempting to publish directly.

Author: jsulopzs

.github/workflows/publish.yml

@@ -1,14 +1,30 @@
-name: Publish to PyPI
+name: Release Please
 
 on:
   push:
     branches: [main]
 
+permissions:
+  contents: write
+  pull-requests: write
+
 jobs:
+  release-please:
+    runs-on: ubuntu-latest
+    outputs:
+      release_created: ${{ steps.release.outputs.release_created }}
+    steps:
+      - uses: googleapis/release-please-action@v4
+        id: release
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+
   publish:
+    needs: release-please
+    if: needs.release-please.outputs.release_created == 'true'
     runs-on: ubuntu-latest
     permissions:
-      id-token: write # Required for trusted publishing
+      id-token: write
     steps:
       - uses: actions/checkout@v4
 
@@ -24,5 +40,3 @@ jobs:
 
       - name: Publish to PyPI
         uses: pypa/gh-action-pypi-publish@release/v1
-        with:
-          skip-existing: true

.release-please-manifest.json

@@ -0,0 +1,3 @@
+{
+  ".": "0.2.1"
+}

release-please-config.json

@@ -0,0 +1,19 @@
+{
+  "packages": {
+    ".": {
+      "release-type": "python",
+      "package-name": "python-eia",
+      "extra-files": [
+        "pyproject.toml"
+      ],
+      "changelog-sections": [
+        { "type": "feat", "section": "Features" },
+        { "type": "fix", "section": "Bug Fixes" },
+        { "type": "perf", "section": "Performance" },
+        { "type": "docs", "section": "Documentation", "hidden": true },
+        { "type": "chore", "section": "Miscellaneous", "hidden": true }
+      ]
+    }
+  },
+  "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json"
+}