ci: Check spelling with codespell

* You can ignore words inline by adding a comment like `# codespell:ignore word`.
* You can ignore words by adding them to the `.codespell_ignores` file.
* You can ignore files and directories by adding them with `skip = ` to the `.codespellrc` file.

Signed-off-by: Sergei Petrosian <spetrosi@redhat.com>

Author: spetrosi

.codespell_ignores

@@ -0,0 +1,8 @@
+[codespell]
+check-hidden = true
+# Note that `-w` doesn't work when ignore-multiline-regex is set
+# https://github.com/codespell-project/codespell/issues/3642
+ignore-multiline-regex = codespell:ignore-begin.*codespell:ignore-end
+ignore-words = .codespell_ignores
+# skip-file is not available https://github.com/codespell-project/codespell/pull/2759
+skip = .README.html

.codespellrc

@@ -0,0 +1,17 @@
+# Codespell configuration is within .codespellrc
+---
+name: Codespell
+on:  # yamllint disable-line rule:truthy
+  - pull_request
+permissions:
+  contents: read
+jobs:
+  codespell:
+    name: Check for spelling errors
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Codespell
+        uses: codespell-project/actions-codespell@v2

.github/workflows/codespell.yml

@@ -0,0 +1,27 @@
+# Codespell configuration is within .codespellrc
+---
+name: Detect non-inclusive language
+on:  # yamllint disable-line rule:truthy
+  - pull_request
+permissions:
+  contents: read
+jobs:
+  codespell:
+    name: Detect non-inclusive language
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Get variable with regex values
+        id: regexvar
+        run: |
+          curl -L -s -o dictionary_usage.txt https://raw.githubusercontent.com/codespell-project/codespell/refs/heads/main/codespell_lib/data/dictionary_usage.txt
+          regexvar=$(sed 's/->.*//g' dictionary_usage.txt | sed 's/$/|/' | tr -d '\n' | sed 's/.$//')
+          rm dictionary_usage.txt
+          echo "regex = $regexvar" >> .codespellrc
+
+      - name: Detect non-inclusive language with codespell
+        uses: codespell-project/actions-codespell@v2
+        with:
+          builtin: usage

.github/workflows/detect_non_inclusive_language.yml

@@ -1,6 +1,6 @@
 # Cockpit
 
-[![ansible-lint.yml](https://github.com/linux-system-roles/cockpit/actions/workflows/ansible-lint.yml/badge.svg)](https://github.com/linux-system-roles/cockpit/actions/workflows/ansible-lint.yml) [![ansible-test.yml](https://github.com/linux-system-roles/cockpit/actions/workflows/ansible-test.yml/badge.svg)](https://github.com/linux-system-roles/cockpit/actions/workflows/ansible-test.yml) [![integration-tests.yml](https://github.com/linux-system-roles/cockpit/actions/workflows/integration-tests.yml/badge.svg)](https://github.com/linux-system-roles/cockpit/actions/workflows/integration-tests.yml) [![markdownlint.yml](https://github.com/linux-system-roles/cockpit/actions/workflows/markdownlint.yml/badge.svg)](https://github.com/linux-system-roles/cockpit/actions/workflows/markdownlint.yml) [![tft.yml](https://github.com/linux-system-roles/cockpit/actions/workflows/tft.yml/badge.svg)](https://github.com/linux-system-roles/cockpit/actions/workflows/tft.yml) [![tft_citest_bad.yml](https://github.com/linux-system-roles/cockpit/actions/workflows/tft_citest_bad.yml/badge.svg)](https://github.com/linux-system-roles/cockpit/actions/workflows/tft_citest_bad.yml) [![woke.yml](https://github.com/linux-system-roles/cockpit/actions/workflows/woke.yml/badge.svg)](https://github.com/linux-system-roles/cockpit/actions/workflows/woke.yml)
+[![ansible-lint.yml](https://github.com/linux-system-roles/cockpit/actions/workflows/ansible-lint.yml/badge.svg)](https://github.com/linux-system-roles/cockpit/actions/workflows/ansible-lint.yml) [![ansible-test.yml](https://github.com/linux-system-roles/cockpit/actions/workflows/ansible-test.yml/badge.svg)](https://github.com/linux-system-roles/cockpit/actions/workflows/ansible-test.yml) [![codespell.yml](https://github.com/linux-system-roles/cockpit/actions/workflows/codespell.yml/badge.svg)](https://github.com/linux-system-roles/cockpit/actions/workflows/codespell.yml) [![detect_non_inclusive_language.yml](https://github.com/linux-system-roles/cockpit/actions/workflows/detect_non_inclusive_language.yml/badge.svg)](https://github.com/linux-system-roles/cockpit/actions/workflows/detect_non_inclusive_language.yml) [![integration-tests.yml](https://github.com/linux-system-roles/cockpit/actions/workflows/integration-tests.yml/badge.svg)](https://github.com/linux-system-roles/cockpit/actions/workflows/integration-tests.yml) [![markdownlint.yml](https://github.com/linux-system-roles/cockpit/actions/workflows/markdownlint.yml/badge.svg)](https://github.com/linux-system-roles/cockpit/actions/workflows/markdownlint.yml) [![tft.yml](https://github.com/linux-system-roles/cockpit/actions/workflows/tft.yml/badge.svg)](https://github.com/linux-system-roles/cockpit/actions/workflows/tft.yml) [![tft_citest_bad.yml](https://github.com/linux-system-roles/cockpit/actions/workflows/tft_citest_bad.yml/badge.svg)](https://github.com/linux-system-roles/cockpit/actions/workflows/tft_citest_bad.yml) [![woke.yml](https://github.com/linux-system-roles/cockpit/actions/workflows/woke.yml/badge.svg)](https://github.com/linux-system-roles/cockpit/actions/workflows/woke.yml)
 
 Installs and configures the Cockpit Web Console for distributions that support it, such as RHEL, CentOS, Fedora, Debian, and Ubuntu.