feat(bin): update scripts to function format

local/bin/x-check-git-attributes

@@ -1,19 +1,41 @@
 #!/usr/bin/env bash
 #
-# Check git repo's files .gitattributes and are all of them mapped.
+# Check git repo's files .gitattributes and ensure all of them are mapped.
 # Ismo Vuorinen <https://github.com/ivuorinen> 2022
-#
+source "${DOTFILES}/config/shared.sh"
 
-if ! command -v git &> /dev/null; then
-  echo "git could not be found, please install it first"
-  exit 1
-fi
+set -euo pipefail
 
-missing_attributes=$(git ls-files | git check-attr -a --stdin | grep "text: auto")
+# Enable verbosity with VERBOSE=1
+VERBOSE="${VERBOSE:-0}"
 
-if [[ "$missing_attributes" ]]; then
-  echo ".gitattributes rule missing for the following files:"
-  echo "$missing_attributes"
-else
-  echo "All files have a corresponding rule in .gitattributes"
-fi
+# Function to check if git is installed
+check_git_installed()
+{
+  if ! command -v git &> /dev/null; then
+    msg_err "git could not be found, please install it first"
+  fi
+}
+
+# Function to check for missing .gitattributes
+check_gitattributes()
+{
+  local missing_attributes
+  missing_attributes=$(git ls-files | git check-attr -a --stdin | grep "text: auto" || true)
+
+  if [[ -n "$missing_attributes" ]]; then
+    echo ".gitattributes rule missing for the following files:"
+    echo "$missing_attributes"
+  else
+    echo "All files have a corresponding rule in .gitattributes"
+  fi
+}
+
+# Main function
+main()
+{
+  check_git_installed
+  check_gitattributes
+}
+
+main "$@"