add https://github.com/crate-ci/typos spell checking

.github/workflows/ci.yml

@@ -7,6 +7,13 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+  typos:
+    runs-on: ubuntu-latest
+    name: typos
+    steps:
+      - uses: actions/checkout@v4
+      - uses: crate-ci/typos@master
+
   build-linux:
     runs-on: ubuntu-latest
     timeout-minutes: 30

_typos.toml

@@ -0,0 +1,17 @@
+files.extend-exclude = ["distr/*"]
+
+# typos can't handle "2nd" as a word (yet?)
+default.extend-ignore-identifiers-re = ["_2nd"]
+
+[default.extend-words]
+ser = "ser" # serialization
+thr = "thr" # thread
+
+[default.extend-identifiers]
+ba = "ba"           # block_allocator
+ecs_eis = "ecs_eis" # entity index store (entity_index.h)
+numer = "numer"     # numerator (posix_impl.inl)
+ot = "ot"           # Opaque Type or Other Table
+Fo = "Fo"           # used in test cases/examples
+UE4 = "UE4"
+PNGs = "PNGs"