spellcheck CI (#15)

Co-authored-by: Dave Kleinschmidt <dave.f.kleinschmidt@gmail.com>

.github/workflows/spellcheck.yml

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+# adapted from https://github.com/JuliaDocs/Documenter.jl/blob/master/.github/workflows/SpellCheck.yml
+# see docs at https://github.com/crate-ci/typos
+name: Spell Check
+on: [pull_request]
+
+jobs:
+  typos-check:
+    name: Spell Check with Typos
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Actions Repository
+        uses: actions/checkout@v4
+      - name: Check spelling
+        uses: crate-ci/typos@master
+        with:
+            config: _typos.toml
+            write_changes: true
+      - uses: reviewdog/action-suggester@v1
+        with:
+          tool_name: Typos
+          fail_on_error: true

_typos.toml

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+# https://github.com/crate-ci/typos#false-positives
+[default]
+
+[default.extend-identifiers]
+Lik = "Lik"
+missings = "missings"
+
+[default.extend-words]
+Lik = "Lik"
+missings = "missings"
+
+[type.package_toml]
+# Don't check spellings in these files
+extend-glob = ["Manifest.toml", "Project.toml"]
+check-file = false
+
+[type.bib]
+# contain lots of names, which are a great spot for false positives
+extend-glob = ["*.bib"]
+check-file = false