Add linting workflow

.github/spellcheck/allow.txt

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+LaTeX

.github/workflows/linting.yml

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+name: Linting
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+permissions:
+  contents: read
+
+env:
+  WORDLIST: .github/spellcheck/allow.txt
+
+jobs:
+  checks:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Spell check (aspell)
+        env: 
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y aspell aspell-en
+          mkdir -p "$(dirname "$WORDLIST")"
+          touch "$WORDLIST"
+          aspell --mode=tex --lang=en_US --personal="$WORDLIST" --list < resume.tex \
+            | sort -u | tee misspellings.txt
+          if [ -s misspellings.txt ]; then
+            echo "Misspellings found:"
+            cat misspellings.txt
+            exit 1
+          fi
+
+      - name: LaTeX lint (chktex)
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y chktex
+          chktex -q -n1 -n3 -n8 resume.tex