Build 0.1.2

Add env and init command
Update documentation

app/Commands/Env/EnvSetCommand.php

@@ -0,0 +1,72 @@
+<?php
+
+namespace App\Commands\Env;
+
+use Dotenv\Dotenv;
+use Illuminate\Console\Scheduling\Schedule;
+use Illuminate\Support\Facades\App;
+use LaravelZero\Framework\Commands\Command;
+
+class EnvSetCommand extends Command
+{
+    /**
+     * The signature of the command.
+     *
+     * @var string
+     */
+    protected $signature = 'env:set
+                                {key : Key of the environment}
+                                {value : Value of the environment}';
+
+    /**
+     * The description of the command.
+     *
+     * @var string
+     */
+    protected $description = 'Set and save an environment variable in the .env file';
+
+    /**
+     * Execute the console command.
+     *
+     * @return int
+     */
+    public function handle(): int
+    {
+        $envFilePath = App::environmentFilePath();
+        $this->info(sprintf("The following environment file is used: '%s'", $envFilePath));
+
+        if (file_exists($envFilePath)) {
+            $env = Dotenv::parse(file_get_contents($envFilePath));
+        } else {
+            $this->warn('The environment file does not exist. Creating a new one...');
+            $env = [];
+        }
+
+        $env[strtoupper($this->argument('key'))] = $this->argument('value');
+
+        file_put_contents($envFilePath, self::updateEnv($env));
+
+        $this->info('The environment file was successfully updated.');
+
+        return 0;
+    }
+
+    public static function updateEnv($data = []): string
+    {
+        if (!count($data)) {
+            return PHP_EOL;
+        }
+
+        $lines = [];
+
+        foreach ($data as $key => $value) {
+            if (preg_match('/\s/', $value) || strpos($value, '=') !== false) {
+                $value = '"' . $value . '"';
+            }
+
+            $lines[] = sprintf('%s=%s', $key, $value);
+        }
+
+        return implode(PHP_EOL, $lines);
+    }
+}