Add installation command

Adds an installation and .env modification commands for better usability

app/Console/Commands/SetEnv.php

@@ -0,0 +1,53 @@
+<?php
+
+namespace App\Console\Commands;
+
+use Illuminate\Console\Command;
+
+class SetEnv extends Command
+{
+    /**
+     * The name and signature of the console command.
+     *
+     * @var string
+     */
+    protected $signature = 'environment:modify {key : Key name} {value : New value}';
+
+    /**
+     * The console command description.
+     *
+     * @var string
+     */
+    protected $description = 'Permanently modifies an environment variable on the .env file for later use.';
+
+    /**
+     * Create a new command instance.
+     *
+     * @return void
+     */
+    public function __construct()
+    {
+        parent::__construct();
+    }
+
+    /**
+     * Execute the console command.
+     * @see https://stackoverflow.com/a/50965881/11540218
+     * @return mixed
+     */
+    public function handle()
+    {
+      $path = base_path('/.env');
+      $name = $this->argument('key');
+      $value = $this->argument('value');
+
+      if (file_exists($path))
+      {
+        file_put_contents($path, str_replace(
+            $name . '=' . env($name), $name . '=' . $value, file_get_contents($path)
+        ));
+      }
+
+      $this->info('>> Changed value! It may now be accessed via env() or config() if there\'s a file for it.');
+    }
+}