issue #5: Creato migration per generalizzazione documenti e funzioni sul model GenDoc

database/migrations/2023_09_12_083340_create_gen_docs_table.php

@@ -0,0 +1,36 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreateGenDocsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('gen_docs', function (Blueprint $table) {
+            // Documenti generali definibili agganciabili a diverse entità
+            $table->id();
+            $table->timestamps();
+            $table->integer('entity')->unsigned();
+            $table->bigInteger('entity_id');
+            $table->string('filename', 255);
+            $table->longText('descrizone');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('gen_docs');
+    }
+}