Add unittests for base64 encoder and decoder #322

	---
	name: Codespell

	on:
	pull_request:
	push:

	permissions:
	contents: read # to fetch code (actions/checkout)

	jobs:
	codespell:
	name: Check for spelling errors
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	- uses: codespell-project/actions-codespell@master
	with:
	skip: ./src/tests/fuzzing/corpus,compat_*
	ignore_words_file: .github/codespell_ignore_words.txt

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