ci: add check-spelling (#462)

This is a basic spell checker to make sure words are spelled correctly.

Signed-off-by: Xe Iaso <me@xeiaso.net>
Co-authored-by: Xe Iaso <me@xeiaso.net>

.github/actions/spelling/excludes.txt

@@ -0,0 +1,88 @@
+# See https://github.com/check-spelling/check-spelling/wiki/Configuration-Examples:-excludes
+(?:^|/)(?i)COPYRIGHT
+(?:^|/)(?i)LICEN[CS]E
+(?:^|/)(?i)third[-_]?party/
+(?:^|/)3rdparty/
+(?:^|/)generated/
+(?:^|/)go\.sum$
+(?:^|/)package(?:-lock|)\.json$
+(?:^|/)Pipfile$
+(?:^|/)pyproject.toml
+(?:^|/)vendor/
+(?:^|/|\b)requirements(?:-dev|-doc|-test|)\.txt$
+\.a$
+\.ai$
+\.all-contributorsrc$
+\.avi$
+\.bmp$
+\.bz2$
+\.cert?$|\.crt$
+\.class$
+\.coveragerc$
+\.crl$
+\.csr$
+\.dll$
+\.docx?$
+\.drawio$
+\.DS_Store$
+\.eot$
+\.eps$
+\.exe$
+\.gif$
+\.git-blame-ignore-revs$
+\.gitattributes$
+\.gitkeep$
+\.graffle$
+\.gz$
+\.icns$
+\.ico$
+\.ipynb$
+\.jar$
+\.jks$
+\.jpe?g$
+\.key$
+\.lib$
+\.lock$
+\.map$
+\.min\..
+\.mo$
+\.mod$
+\.mp[34]$
+\.o$
+\.ocf$
+\.otf$
+\.p12$
+\.parquet$
+\.pdf$
+\.pem$
+\.pfx$
+\.png$
+\.psd$
+\.pyc$
+\.pylintrc$
+\.qm$
+\.s$
+\.sig$
+\.so$
+\.svgz?$
+\.sys$
+\.tar$
+\.tgz$
+\.tiff?$
+\.ttf$
+\.wav$
+\.webm$
+\.webp$
+\.woff2?$
+\.xcf$
+\.xlsx?$
+\.xpm$
+\.xz$
+\.zip$
+^\.github/actions/spelling/
+^\Q.github/FUNDING.yml\E$
+^\Q.github/workflows/spelling.yml\E$
+^data/crawlers/
+^docs/static/\.nojekyll$
+ignore$
+robots.txt