feat(params): Add debug logging toggle

cfddns.sh

@@ -175,6 +175,10 @@ scriptHelp() {
   textBlock "Switch value. Script will not log anything. You will not have *any* output from the script if you choose this option, so you will not know if updates succeed or fail."
   textBlockDefaults "(disabled: use file-based logging)"
   newline
+  textBlockSwitches "--log-debug"
+  textBlock "Switch value. Log 'debug' level messages. This should normally remain disabled."
+  textBlockDefaults "(disabled: do not log 'debug' messages)"
+  newline
   textBlockSwitches "--fmt-json"
   textBlock "Switch value. Use JSON formatted key-value pair structured logging format. Best when using a log parsing tool or log management system to read your log files. Does not apply when using '--log-journal'."
   textBlockDefaults "(enabled)"
@@ -231,6 +235,7 @@ scriptPath="$(CDPATH='' \cd -- "$(dirname -- "$0")" && pwd -P)"
 scriptName="$(basename "$0")"
 logFile="$scriptPath/${scriptName%.*}.log"
 logToJournal=0
+logDebug=0
 useJsonLogFmt=1
 useSyslogLogFmt=0
 accountFile="$scriptPath/cloudflare.credentials"
@@ -280,6 +285,10 @@ while [ $# -gt 0 ]; do
   # do not log anything
     logFile="/dev/null"
     ;;
+  --log-debug)
+  # log debugging messages
+    logDebug=1
+    ;;
   --fmt-json)
   # use JSON log formatting
     useJsonLogFmt=1