create git hook directory if it is missing

Author: PhilippSalvisberg

hook/README.md

@@ -88,6 +88,7 @@ This installation variant is independent of the `Trivadis/plsql-formatter-settin
 
     FORMATTER_DIR="$(dirname $0)"
     GIT_HOOK_DIR="$FORMATTER_DIR/../.git/hooks"
+    mkdir -p $GIT_HOOK_DIR
     cp $FORMATTER_DIR/pre-commit $GIT_HOOK_DIR/pre-commit
     chmod +x $GIT_HOOK_DIR/pre-commit
     curl -o $GIT_HOOK_DIR/tvdformat.jar -L https://github.com/Trivadis/plsql-formatter-settings/releases/download/sqldev-21.2.1/tvdformat.jar