OSOE-960: Add codespell action and workflow for spell-checking

[Piedone]

OSOE-960
Fixes #423

[github-actions]

@check-spelling-bot Report

🔴 Please review

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Unrecognized words (2)

codespell
codespellrc

To accept these unrecognized words as correct, you could run the following commands

... in a clone of the [email protected]:Lombiq/GitHub-Actions.git repository
on the issue/OSOE-960 branch (ℹ️ how do I use this?):

curl -s -S -L 'https://raw.githubusercontent.com/Lombiq/GitHub-Actions/dev/apply.pl' |
perl - 'https://github.com/Lombiq/GitHub-Actions/actions/runs/12856856102/attempts/1'

Errors (1)

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❌ Errors	Count
❌ check-file-path	1

See ❌ Event descriptions for more information.

[DemeSzabolcs]

The spell checking is good on dev. It was only triggered here because I switched to the dev branch in workflows, so it used the word library that is there, but since it's merged now, it includes "codespell" and "codespellrc".