MNT Add auto-tag workflow

.github/workflows/auto-tag.yml

@@ -0,0 +1,12 @@
+name: Auto-tag
+on:
+  push:
+    tags:
+      - '*.*.*'
+jobs:
+  auto-tag:
+    name: Auto-tag
+    runs-on: ubuntu-latest
+    steps:
+      - name: Auto-tag
+        uses: silverstripe/gha-auto-tag@main

README.md

@@ -1,5 +1,16 @@
 # GitHub Actions - Pull request
 
-Create a new branch, makes a commit and a creates a pull-request using with a github-actions user as the author
+Create a new branch, makes a commit and a creates a pull-request using with a github-actions user as the author. These will be created on the account/repo that called the actions.
 
-This will be created on the account/repo that called the actions, it will not create a pull-request in a forked repo.
+## Usage
+
+**workflow.yml**
+```yml
+steps:
+  - name: Create pull-request
+    uses: silverstripe/gha-pull-request@main
+    with:
+      branch: pulls/4/my-branch
+      title: NEW My pull-request title
+      description: This pull-request does great things
+```

action.yml

@@ -1,5 +1,6 @@
 name: Branch commit and pull-request
 description: GitHub Action to create a branch, commit and a pull-request as the github-actions user
+
 inputs:
   branch:
     type: string
@@ -11,9 +12,11 @@ inputs:
     type: string
     required: false
     default: ''
+
 runs:
   using: composite
   steps:
+
     - name: Validate branch
       shell: bash
       env:
@@ -37,6 +40,9 @@ runs:
         TITLE: ${{ inputs.title }}
         DESCRIPTION: ${{ inputs.description }}
       run: |
+        # Escape double quotes '"' => '\"'
+        TITLE=${TITLE//\"/\\\"}
+        DESCRIPTION=${DESCRIPTION//\"/\\\"}
         BASE_BRANCH=$(git rev-parse --abbrev-ref HEAD)
         # Run git commit, push and create pull-request as 'github-actions' user
         git config --local user.name "github-actions"