feat(extension): add streetsidesoftware.code-spell-checker extension

.gitignore

@@ -1,2 +1,3 @@
 .vscode/settings.json
 /node_modules
+spelling_errors.json

cspell.json

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+{
+  // https://cspell.org/configuration/
+  "version": "0.2",
+  "language": "en",
+  "dictionaries": [], // https://cspell.org/docs/dictionaries/
+  "allowCompoundWords": true,
+  "enableFiletypes": ["shellscript"],
+  "ignorePaths": ["cspell.json", "node_modules"],
+  "minWordLength": 4,
+  "maxNumberOfProblems": 100, 
+  "flagWords": [], // List of words to be always considered incorrect
+  "ignoreWords": [], // Ignore allows you the specify a list of words you want to ignore
+  "words": [] // List of words to be ignored (even if they are in the flagWords list)
+}

spellcheck.sh

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+#!/bin/bash
+
+# When editing this file, please check whether the changes also need to be applied to the LinuxGSM and LinuxGSM-Dev-Docs repositories.
+
+# Temporary file for cspell output
+tempFile=$(mktemp)
+
+# Run cspell on all files and capture the output
+cspell "**" > "$tempFile" 2>&1
+
+# Process the output to extract unique words and save them to spelling_errors.json
+# This assumes that the spelling errors are identifiable in a specific format from cspell output
+grep "Unknown word" "$tempFile" | grep -oP "\(\K[^\)]+" | sort -u | jq -R . | jq -s . > spelling_errors.json
+
+# Cleanup
+rm "$tempFile"
+
+echo "Spelling errors have been saved to spelling_errors.json"