feat(project-template): use clang-format-19 with "Latest" C++ standard

.clang-format

@@ -87,5 +87,5 @@ SpacesInCStyleCastParentheses: 'false'
 SpacesInContainerLiterals: 'true'
 SpacesInParentheses: 'false'
 SpacesInSquareBrackets: 'false'
-Standard: c++17
+Standard: Latest
 UseTab: Never

cmake/check-coding-style.sh

@@ -11,15 +11,15 @@ exclude_path=${1:-justignoreme}
 exclude_pattern="$exclude_path/*"
 
 # check clang-format formatting
-if which clang-format-14 > /dev/null; then
-  find $mypath \( -name \*.cc -o -name \*.cpp -o -name \*.h \) -not -path "$exclude_pattern" -exec clang-format-14 --output-replacements-xml \{\} \; | grep "^<replacement " > /dev/null
+if which clang-format-19 > /dev/null; then
+  find $mypath \( -name \*.cc -o -name \*.cpp -o -name \*.h \) -not -path "$exclude_pattern" -exec clang-format-19 --output-replacements-xml \{\} \; | grep "^<replacement " > /dev/null
   if [ $? -ne 1 ]; then
     echo 1 > "${ERRFILE}"
     echo "Code formatting incorrect!"
   fi
 else
   echo 77 > "${ERRFILE}"
-  echo "WARNING: clang-format-14 not found, code formatting not checked!"
+  echo "WARNING: clang-format-19 not found, code formatting not checked!"
 fi
 
 # check copyright/licence file header comment