Add CI workflow to check for commonly misspelled words

On every push, pull request, and periodically, use codespell to check for commonly
misspelled words.

In the event of a false positive, the problematic word should be added, in all lowercase, to the
field of . Regardless of the case of the word in the false positive, it must be in all lowercase in the
ignore list. The ignore list is comma-separated with no spaces.

Author: aentinger

.codespellrc

@@ -0,0 +1,9 @@
+# Source: https://github.com/arduino/tooling-project-assets/blob/main/workflow-templates/assets/spell-check/.codespellrc
+# See: https://github.com/codespell-project/codespell#using-a-config-file
+[codespell]
+# In the event of a false positive, add the problematic word, in all lowercase, to a comma-separated list here:
+ignore-words-list = ,
+skip = ./.git,./.licenses,__pycache__,node_modules,./go.mod,./go.sum,./package-lock.json,./poetry.lock,./yarn.lock
+builtin = clear,informal,en-GB_to_en-US
+check-filenames =
+check-hidden =

.github/workflows/spell-check.yml

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+name: Spell Check
+
+# See: https://docs.github.com/en/free-pro-team@latest/actions/reference/events-that-trigger-workflows
+on:
+  push:
+  pull_request:
+  schedule:
+    # Run every Tuesday at 8 AM UTC to catch new misspelling detections resulting from dictionary updates.
+    - cron: "0 8 * * TUE"
+  workflow_dispatch:
+  repository_dispatch:
+
+jobs:
+  spellcheck:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Spell check
+        uses: codespell-project/actions-codespell@master

README.md

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+<img src="https://content.arduino.cc/website/Arduino_logo_teal.svg" height="100" align="right" />
+
+`USBHostMbed5`
+==============
+
+[![Spell Check status](https://github.com/facchinm/USBHostMbed5/actions/workflows/spell-check.yml/badge.svg)](https://github.com/facchinm/USBHostMbed5/actions/workflows/spell-check.yml)
+
+ARM Mbed5 USB Host library ported for [ArduinoCore-mbed](https://github.com/arduino/ArduinoCore-mbed) enabled boards.
+
+## :mag_right: Resources
+
+* [How to install a library](https://www.arduino.cc/en/guide/libraries)
+* [Help Center](https://support.arduino.cc/)
+* [Forum](https://forum.arduino.cc)
+
+## :bug: Bugs & Issues
+
+If you want to report an issue with this library, you can submit it to the [issue tracker](https://github.com/arduino-libraries/Arduino_Braccio_plusplus/issues) of this repository. Remember to include as much detail as you can about your hardware set-up, code and steps for reproducing the issue. Make sure you're using an original Arduino board.
+
+## :technologist: Development
+
+There are many ways to contribute:
+
+* Improve documentation and examples
+* Fix a bug
+* Test open Pull Requests
+* Implement a new feature
+* Discuss potential ways to improve this library
+
+You can submit your patches directly to this repository as Pull Requests. Please provide a detailed description of the problem you're trying to solve and make sure you test on real hardware.
+
+## :yellow_heart: Donations
+
+This open-source code is maintained by Arduino with the help of the community. We invest a considerable amount of time in testing code, optimizing it and introducing new features. Please consider [donating](https://www.arduino.cc/en/donate/) or [sponsoring](https://github.com/sponsors/arduino) to support our work, as well as [buying original Arduino boards](https://store.arduino.cc/) which is the best way to make sure our effort can continue in the long term.
+