Add workflow for spell checking (#259)

* Add workflow for automated spell checking

* enhance .typos.toml

* improve spelling.yml

---------

Co-authored-by: Viktor Szépe <viktor@szepe.net>

Author: IanDelMar

.github/workflows/spelling.yml

@@ -0,0 +1,23 @@
+name: Spelling
+
+on:
+  push:
+    branches:
+    - master
+  pull_request: null
+  workflow_dispatch: null
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  typos_check:
+    name: Typos
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v4
+
+    - name: Check spelling
+      uses: crate-ci/typos@master

.typos.toml

@@ -0,0 +1,14 @@
+[files]
+extend-exclude = [
+    ".git/",
+    "source/",
+    "wordpress-stubs.php",
+]
+ignore-hidden = false
+
+[default.extend-identifiers]
+Automattic = "Automattic"
+get_post_stati = "get_post_stati"
+Github = "GitHub"
+Woocommerce = "WooCommerce"
+Wordpress = "WordPress"