Add workflow to auto-update README table of contents

Author: felixschndr

.github/workflows/toc.yml

@@ -0,0 +1,32 @@
+on:
+  push:
+    paths: [ 'README.md' ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 2
+      - run: |
+          curl https://raw.githubusercontent.com/ekalinin/github-markdown-toc/master/gh-md-toc -o gh-md-toc
+          chmod a+x gh-md-toc
+          ./gh-md-toc --insert --no-backup --hide-footer README.md
+          rm gh-md-toc
+
+      - name: Get last commit message
+        id: last-commit
+        run: |
+          echo "message=$(git log -1 --pretty=%s)" >> $GITHUB_OUTPUT
+          echo "author=$(git log -1 --pretty=\"%an <%ae>\")" >> $GITHUB_OUTPUT
+
+      - uses: stefanzweifel/git-auto-commit-action@v5
+        with:
+          commit_author: ${{ steps.last-commit.outputs.author }}
+          commit_message: ${{ steps.last-commit.outputs.message }}
+          commit_options: '--amend --no-edit'
+          push_options: '--force'
+          skip_fetch: true

README.md

@@ -1,7 +1,12 @@
-# InverterChargeController
+## InverterChargeController
 
 This project aims to charge the battery pack of a photovoltaic system when the energy rates are as low as possible.
 
+## Table of contents
+
+<!--ts-->
+<!--te-->
+
 ## Usage
 
 ### Setup