fix: add trace:on and trace:off

Closes #3553

plugins/trace/subcommands/off

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+set -eo pipefail
+[[ $DOKKU_TRACE ]] && set -x
+source "$PLUGIN_CORE_AVAILABLE_PATH/common/functions"
+
+trace_off_cmd() {
+  declare desc="disables trace mode"
+  local cmd="trace"
+  [[ -d $DOKKU_ROOT/.dokkurc ]] || mkdir -p "$DOKKU_ROOT/.dokkurc"
+
+  dokku_log_info1 "Disabling trace mode"
+  rm -f "$DOKKU_ROOT/.dokkurc/DOKKU_TRACE"
+}
+
+trace_off_cmd "$@"