Implement Unit Tests, add Readme, add examples, stronger implementation

bin/more_elaborate_example.php

@@ -0,0 +1,24 @@
+<?php
+
+use Toalett\Multiprocessing\ContextBuilder;
+use Toalett\Multiprocessing\ConcurrencyLimit;
+use React\EventLoop\Factory as EventLoopFactory;
+
+require_once __DIR__ . '/../vendor/autoload.php';
+
+// Create our own EventLoop and limit and supply them to the builder
+$loop = EventLoopFactory::create();
+$limit = new ConcurrencyLimit(4);
+$context = ContextBuilder::create()->withEventLoop($loop)->withLimit($limit)->build();
+
+$context->on('booted', fn() => print("🚽 Toalett Multiprocessing Context\n"));
+$context->on('congestion', fn() => print('C'));
+$context->on('congestion_relieved', fn() => print('R'));
+$context->on('worker_started', fn() => print('+'));
+$context->on('worker_stopped', fn() => print('-'));
+
+// Submit a fake job every second
+$loop->addPeriodicTimer(1, fn() => $context->submit(fn(int $s) => sleep($s), random_int(0, 10)));
+
+print("Press CTRL+C to stop.\n");
+$context->run();