Convert codespell from Drone to GH actions

.github/workflows/spellcheck.yaml

@@ -0,0 +1,24 @@
+name: Codespell
+on:
+  push:  
+  pull_request:
+    branches:
+      - master
+  workflow_dispatch: {}
+jobs:
+  spellcheck:
+    name: Spell Check
+    runs-on: ubuntu-20.04
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+      with:
+        fetch-depth: 1
+    - name: Set up Python 🐍
+      uses: actions/setup-python@v4
+    - name: Install codespell
+      run: |
+        python -m pip install --upgrade pip
+        pip install codespell
+    - name: Check spelling
+      run: codespell --skip=.git,./vendor,./MAINTAINERS,go.mod,go.sum --check-filenames --ignore-regex=.te# --ignore-words=.codespellignore

Makefile

@@ -140,11 +140,7 @@ package-windows-bundle: build				## Package the Windows tarball bundle
 	./scripts/package-windows-bundle
 
 .PHONY: test
-test: codespell-test unit-tests integration-tests
-
-.PHONY: codespell-test
-codespell-test:
-	./scripts/codespell.sh
+test: unit-tests integration-tests
 
 .PHONY: unit-tests
 unit-tests:

developer-docs/testing.md

@@ -53,7 +53,7 @@ ___
 ## Integration Tests
 
 Integration tests should be used to test a specific functionality of RKE2 that exists across multiple Go packages,
-either via exported function calls, or more often, CLI comands. Integration tests should be used for "black box"
+either via exported function calls, or more often, CLI commands. Integration tests should be used for "black box"
 testing. 
 
 ### Framework