ci: add codespell job

Author: delta1

.github/workflows/codespell.yml

@@ -0,0 +1,12 @@
+name: codespell
+
+on: [push, pull_request]
+
+jobs:
+  codespell:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: codespell-project/actions-codespell@v2
+        with:
+            ignore_words_file: spelling.ignore.txt

spelling.ignore.txt

@@ -0,0 +1,12 @@
+ist
+crate
+nd
+wit
+fro
+iterm
+catche
+thn
+hge
+olt
+alo
+ba