ui(admin): fix egg creation

app/Models/Egg.php

@@ -78,6 +78,9 @@ class Egg extends Model
      * Fields that are not mass assignable.
      */
     protected $fillable = [
+        'nest_id',
+        'author',
+        'uuid',
         'name',
         'description',
         'features',

app/Models/Server.php

@@ -162,7 +162,7 @@ class Server extends Model
         'allocation_id' => 'required|bail|unique:servers|exists:allocations,id',
         'nest_id' => 'required|exists:nests,id',
         'egg_id' => 'required|exists:eggs,id',
-        'startup' => 'required|string',
+        'startup' => 'nullable|string',
         'skip_scripts' => 'sometimes|boolean',
         'image' => 'required|string|max:191',
         'database_limit' => 'present|nullable|integer|min:0',