Massively simplify API binding logic

Changes the API internals to use normal Laravel binding which automatically supports nested-models and can determine their relationships. This removes a lot of confusingly complex internal logic and replaces it with standard Laravel code.

This also removes a deprecated "getModel" method and fully replaces it with a "parameter" method that does stricter type-checking.

app/Providers/RouteServiceProvider.php

@@ -3,6 +3,7 @@
 namespace Pterodactyl\Providers;
 
 use Illuminate\Http\Request;
+use Pterodactyl\Models\Database;
 use Illuminate\Support\Facades\Route;
 use Illuminate\Cache\RateLimiting\Limit;
 use Illuminate\Support\Facades\RateLimiter;
@@ -26,6 +27,11 @@ class RouteServiceProvider extends ServiceProvider
             return preg_match(self::FILE_PATH_REGEX, $request->getPathInfo()) === 1;
         });
 
+        // This is needed to make use of the "resolveRouteBinding" functionality in the
+        // model. Without it you'll never trigger that logic flow thus resulting in a 404
+        // error because we request databases with a HashID, and not with a normal ID.
+        Route::model('database', Database::class);
+
         $this->routes(function () {
             Route::middleware(['web', 'csrf'])->group(function () {
                 Route::middleware('auth')->group(base_path('routes/base.php'));
@@ -36,14 +42,18 @@ class RouteServiceProvider extends ServiceProvider
             Route::middleware('api')->group(function () {
                 Route::middleware(['application-api', 'throttle:api.application'])
                     ->prefix('/api/application')
+                    ->scopeBindings()
                     ->group(base_path('routes/api-application.php'));
 
                 Route::middleware(['client-api', 'throttle:api.client'])
                     ->prefix('/api/client')
+                    ->scopeBindings()
                     ->group(base_path('routes/api-client.php'));
             });
 
-            Route::middleware('daemon')->prefix('/api/remote')
+            Route::middleware('daemon')
+                ->prefix('/api/remote')
+                ->scopeBindings()
                 ->group(base_path('routes/api-remote.php'));
         });
     }