feat(ci): add check-spelling (#1189)

.github/actions/spelling/excludes.txt

@@ -0,0 +1,54 @@
+# See https://github.com/check-spelling/check-spelling/wiki/Configuration-Examples:-excludes
+(?:^|/)(?i)COPYRIGHT
+(?:^|/)(?i)LICEN[CS]E
+(?:^|/)go\.sum$
+(?:^|/)package(?:-lock|)\.json$
+(?:^|/)vendor/
+ignore$
+\.a$
+\.ai$
+\.avi$
+\.bmp$
+\.bz2$
+\.crt$
+\.dll$
+\.DS_Store$
+\.eot$
+\.exe$
+\.gif$
+\.gitattributes$
+\.graffle$
+\.gz$
+\.icns$
+\.ico$
+\.jar$
+\.jpe?g$
+\.key$
+\.lib$
+\.lock$
+\.map$
+\.min\..
+\.mod$
+\.mp[34]$
+\.o$
+\.ocf$
+\.otf$
+\.pdf$
+\.pem$
+\.png$
+\.psd$
+\.s$
+\.svg$
+\.tiff?$
+\.ttf$
+\.wav$
+\.woff2?$
+\.zip$
+^\.github/actions/spelling/
+^\Q.github/readme/partials/documentation/inspirations.md\E$
+^\Q.github/workflows/spelling.yml\E$
+^\Qsource/plugins/sponsors/index.mjs\E$
+^\Qsource/plugins/stargazers/worldmap/atlas/50m_countries.geojson\E$
+^\Qsource/templates/terminal/fonts.css\E$
+^\Qsource/templates/terminal/partials/screenshot.ejs\E$
+^\Qtests/mocks/api/github/rest/emojis/get.mjs\E$