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/Models/Database.php

@@ -2,6 +2,9 @@
 
 namespace Pterodactyl\Models;
 
+use Illuminate\Container\Container;
+use Pterodactyl\Contracts\Extensions\HashidsInterface;
+
 /**
  * @property int $id
  * @property int $server_id
@@ -71,6 +74,36 @@ class Database extends Model
         'password' => 'string',
     ];
 
+    /**
+     * {@inheritDoc}
+     */
+    public function getRouteKeyName(): string
+    {
+        return $this->getKeyName();
+    }
+
+    /**
+     * Resolves the database using the ID by checking if the value provided is a HashID
+     * string value, or just the ID to the database itself.
+     *
+     * @param mixed $value
+     * @param string|null $field
+     *
+     * @return \Illuminate\Database\Eloquent\Model|null
+     *
+     * @throws \Illuminate\Contracts\Container\BindingResolutionException
+     */
+    public function resolveRouteBinding($value, $field = null)
+    {
+        if (is_scalar($value) && ($field ?? $this->getRouteKeyName()) === 'id') {
+            $value = ctype_digit((string) $value)
+                ? $value
+                : Container::getInstance()->make(HashidsInterface::class)->decodeFirst($value);
+        }
+
+        return $this->where($field ?? $this->getRouteKeyName(), $value)->firstOrFail();
+    }
+
     /**
      * Gets the host database server associated with a database.
      *