rework phpstan task to use inotifywait

utils/phpstan-watcher.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+
+PHP_VERSION="$1"
+
+[ -z "$PHP_VERSION" ] && PHP_VERSION=8.1
+
+echo PHP_VERSION: ${PHP_VERSION}
+echo PWD: $(pwd)
+
+while true; do
+	inotifywait . -e close_write -r -t 300 | grep -q .php && \
+		(
+			docker run --rm -v $(pwd):/app -v /tmp/phpstan-8.1:/tmp/phpstan \
+				--workdir /app php:${PHP_VERSION}-cli php -d memory_limit=-1 ./vendor/bin/phpstan --memory-limit=2G --error-format=raw
+			echo All done, RC=$?.
+		)
+	sleep 1
+done