👷 Add cargo spellcheck tool

.woodpecker/.validate.yaml

@@ -14,6 +14,13 @@ steps:
     # Not ready to block PR on fail
     failure: ignore
 
+  - name: lint - spellcheck
+    image: rust:1.86
+    commands: |
+      apt update && apt install -y libclang-dev hunspell
+      cargo install --locked cargo-spellcheck
+      cargo spellcheck
+
   - name: lint - dependencies
     image: rust:1.86
     commands: |