Add codespell support (config, workflow to detect/not fix) and make it fix few typos

.codespellrc

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+[codespell]
+# Ref: https://github.com/codespell-project/codespell#using-a-config-file
+# Ignore Testimonials.vue which could have plenty of names
+skip = .git*,*.pdf,package-lock.json,.codespellrc,countries.js,Testimonials.vue
+check-hidden = true
+ignore-regex = \bNees\b
+# ignore-words-list =

.github/workflows/codespell.yml

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+# Codespell configuration is within .codespellrc
+---
+name: Codespell
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+permissions:
+  contents: read
+
+jobs:
+  codespell:
+    name: Check for spelling errors
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Annotate locations with typos
+        uses: codespell-project/codespell-problem-matcher@v1
+      - name: Codespell
+        uses: codespell-project/actions-codespell@v2