Add spellcheck GHA + fix some spelling

Align this project with our other repos

Signed-off-by: Tim Smith <[email protected]>

.github/actions/spelling/README.md

@@ -0,0 +1,15 @@
+# check-spelling/check-spelling configuration
+
+| File                                               | Purpose                                                         | Format                                                    | Info                                                                                                 |
+| -------------------------------------------------- | --------------------------------------------------------------- | --------------------------------------------------------- | ---------------------------------------------------------------------------------------------------- |
+| [allow.txt](allow.txt)                             | Add words to the dictionary                                     | one word per line (only letters and `'`s allowed)         | [allow](https://github.com/check-spelling/check-spelling/wiki/Configuration#allow)                   |
+| [reject.txt](reject.txt)                           | Remove words from the dictionary (after allow)                  | grep pattern matching whole dictionary words              | [reject](https://github.com/check-spelling/check-spelling/wiki/Configuration-Examples%3A-reject)     |
+| [excludes.txt](excludes.txt)                       | Files to ignore entirely                                        | perl regular expression                                   | [excludes](https://github.com/check-spelling/check-spelling/wiki/Configuration-Examples%3A-excludes) |
+| [only.txt](only.txt)                               | Only check matching files (applied after excludes)              | perl regular expression                                   | [only](https://github.com/check-spelling/check-spelling/wiki/Configuration-Examples%3A-only)         |
+| [patterns.txt](patterns.txt)                       | Patterns to ignore from checked lines                           | perl regular expression (order matters, first match wins) | [patterns](https://github.com/check-spelling/check-spelling/wiki/Configuration-Examples%3A-patterns) |
+| [line_forbidden.patterns](line_forbidden.patterns) | Patterns to flag in checked lines                               | perl regular expression (order matters, first match wins) | [patterns](https://github.com/check-spelling/check-spelling/wiki/Configuration-Examples%3A-patterns) |
+| [expect.txt](expect.txt)                           | Expected words that aren't in the dictionary                    | one word per line (sorted, alphabetically)                | [expect](https://github.com/check-spelling/check-spelling/wiki/Configuration#expect)                 |
+| [advice.md](advice.md)                             | Supplement for GitHub comment when unrecognized words are found | GitHub Markdown                                           | [advice](https://github.com/check-spelling/check-spelling/wiki/Configuration-Examples%3A-advice)     |
+
+Note: you can replace any of these files with a directory by the same name (minus the suffix)
+and then include multiple files inside that directory (with that suffix) to merge multiple files together.

.github/actions/spelling/advice.md

@@ -0,0 +1,23 @@
+<!-- See https://github.com/check-spelling/check-spelling/wiki/Configuration-Examples%3A-advice --> <!-- markdownlint-disable MD033 MD041 -->
+<details><summary>If the flagged items are false positives</summary>
+
+If items relate to a ...
+
+- binary file (or some other file you wouldn't want to check at all).
+
+  Please add a file path to the `excludes.txt` file matching the containing file.
+
+  File paths are Perl 5 Regular Expressions - you can [test](https://www.regexplanet.com/advanced/perl/) yours before committing to verify it will match your files.
+
+  `^` refers to the file's path from the root of the repository, so `^README\.md$` would exclude README.md (on whichever branch you're using).
+
+- well-formed pattern.
+
+  If you can write a [pattern](https://github.com/check-spelling/check-spelling/wiki/Configuration-Examples:-patterns) that would match it,
+  try adding it to the `patterns.txt` file.
+
+  Patterns are Perl 5 Regular Expressions - you can [test](https://www.regexplanet.com/advanced/perl/) yours before committing to verify it will match your lines.
+
+  Note that patterns can't match multiline strings.
+
+</details>

.github/actions/spelling/excludes.txt

@@ -0,0 +1,83 @@
+# See https://github.com/check-spelling/check-spelling/wiki/Configuration-Examples:-excludes
+(?:^|/)(?i)COPYRIGHT
+(?:^|/)(?i)LICEN[CS]E
+(?:^|/)3rdparty/
+(?:^|/)go\.sum$
+(?:^|/)package(?:-lock|)\.json$
+(?:^|/)Pipfile$
+(?:^|/)pyproject.toml
+(?:^|/)requirements(?:-dev|-doc|-test|)\.txt$
+(?:^|/)vendor/
+ignore$
+\.a$
+\.ai$
+\.all-contributorsrc$
+\.avi$
+\.bmp$
+\.bz2$
+\.cer$
+\.class$
+\.coveragerc$
+\.crl$
+\.crt$
+\.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/workflows/spelling.yml\E$

.github/actions/spelling/expect.txt

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+aaaaaaaabbbbbbbbccccccccddddeeeeee
+aaaaaaaavvvvvvvvwwwwwwwwxxxxxx
+ADk
+appsettings
+ashburn
+AThq
+codegen
+concat
+connectionstrings
+Cwj
+DXhjr
+FIGc
+Gci
+Hmj
+JFB
+JFUz
+Jhb
+KBp
+ljq
+LQV
+mrns
+NCIs
+nestedatt
+NHar
+ocid
+Ooe
+plainmarkdown
+Plutx
+prefixlines
+QFKc
+Qhgn
+qpbi
+querypack
+Qwc
+scim
+Tcy
+testacc
+TEzu
+tffile
+tfplugingen
+Tjgl
+trimspace
+TSIm
+UZx
+wescoff
+WFygt
+Xgf
+Xkv
+XQXJIK
+Ykc
+YPh
+ZKj
+Zpp