Add a selfoss CLI tool

This introduces two commands for dumping and loading the database contents:

- `php bin/selfoss db:export path.json`
- `php bin/selfoss db:import path.json`

Those are useful for testing, as well as for moving data from one database backend to another.

.php-cs-fixer.php

@@ -4,7 +4,8 @@
     ->exclude('assets')
     ->exclude('utils')
     ->in(__DIR__)
-    ->name('*.phtml');
+    ->name('*.phtml')
+    ->name('selfoss');
 
 $rules = [
     '@Symfony' => true,

bin/selfoss

@@ -0,0 +1,20 @@
+#!/usr/bin/env php
+<?php
+
+require __DIR__ . '/../src/common.php';
+
+use Commands\Database\ExportCommand as DatabaseExportCommand;
+use Commands\Database\ImportCommand as DatabaseImportCommand;
+use Monolog\Handler\StreamHandler;
+use Symfony\Component\Console\Application;
+
+$application = new Application();
+
+$log->popHandler();
+$handler = new StreamHandler('php://stderr');
+$log->pushHandler($handler);
+
+$application->add($dice->create(DatabaseExportCommand::class));
+$application->add($dice->create(DatabaseImportCommand::class));
+
+$application->run();

composer.json

@@ -22,6 +22,7 @@
         "php-http/guzzle6-adapter": "^1.0",
         "simplepie/simplepie": "^1.3",
         "smottt/wideimage": "^1.1",
+        "symfony/console": "^3.4",
         "violet/streaming-json-encoder": "^1.1",
         "willwashburn/phpamo": "^1.0"
     },
@@ -39,6 +40,7 @@
     ],
     "autoload": {
         "psr-4": {
+            "Commands\\": "src/Commands/",
             "controllers\\": "src/controllers/",
             "daos\\": "src/daos/",
             "helpers\\": "src/helpers/",