Feat: add database seeders for all models

database/seeders/DatabaseSeeder.php

@@ -23,6 +23,10 @@ class DatabaseSeeder extends Seeder
             ActivitiesOrganisedTableSeeder::class,
             IvOrganisedTableSeeder::class,
             PublicationSeeder::class,
+            BooksPublishedTableSeeder::class,
+            PatentsTableSeeder::class,
+            ExternalEngagementsTableSeeder::class,
+            OnlineCoursesTableSeeder::class,
         ]);
 
         // User::factory()->create([