Rework address roles, making Address::role optional, rework determining uplink/downlinks/parent/children

database/migrations/2024_05_07_211343_address_remove_role_not_null.php

@@ -0,0 +1,24 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+		DB::update('ALTER TABLE addresses ALTER COLUMN role DROP NOT NULL');
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        //
+    }
+};