feat: self-hosted GitLab Apps OAuth integration

Adds self-hosted GitLab OAuth sources so Coolify can connect to a self-managed GitLab instance, list private repositories, clone over an OAuth token, and deploy (the GitLab counterpart to GitHub Apps).

Hardening: authenticated, one-time team-bound OAuth callback state; token redaction in deploy logs; custom host port/path kept in clone and ls-remote URLs; submodule OAuth auth; system-wide source selection. Covered by unit and feature tests.

cosigned by OpenAI Codex at M1 Max

resources/views/source/all.blade.php

@@ -5,9 +5,12 @@
     <div class="flex items-center gap-2">
         <h1>Sources</h1>
         @can('createAnyResource')
-            <x-modal-input buttonTitle="+ Add" title="New GitHub App" :closeOutside="false">
+            <x-modal-input buttonTitle="+ Add GitHub" title="New GitHub App" :closeOutside="false">
                 <livewire:source.github.create />
             </x-modal-input>
+            <x-modal-input buttonTitle="+ Add GitLab" title="New GitLab App" :closeOutside="false">
+                <livewire:source.gitlab.create />
+            </x-modal-input>
         @endcan
     </div>
     <div class="subtitle">Git sources for your applications.</div>
@@ -17,7 +20,6 @@
                 <a class="flex gap-2 text-center hover:no-underline coolbox group"
                     {{ wireNavigate() }}
                     href="{{ route('source.github.show', ['github_app_uuid' => data_get($source, 'uuid')]) }}">
-                    {{-- <x-git-icon class="dark:text-white w-8 h-8 mt-1" git="{{ $source->getMorphClass() }}" /> --}}
                     <div class="text-left dark:group-hover:text-white flex flex-col justify-center mx-6">
                         <div class="box-title">{{ $source->name }}</div>
                         @if (is_null($source->app_id))
@@ -29,6 +31,22 @@
                         @endif
                     </div>
                 </a>
+            @elseif ($source->getMorphClass() === 'App\Models\GitlabApp')
+                <a class="flex gap-2 text-center hover:no-underline coolbox group"
+                    {{ wireNavigate() }}
+                    href="{{ route('source.gitlab.show', ['gitlab_app_uuid' => data_get($source, 'uuid')]) }}">
+                    <div class="text-left dark:group-hover:text-white flex flex-col justify-center mx-6">
+                        <div class="box-title">
+                            <x-git-icon class="inline-block w-4 h-4 mr-1" git="App\Models\GitlabApp" />
+                            {{ $source->name }}
+                        </div>
+                        @if ($source->isConnected())
+                            <span class="box-description text-success">Connected — {{ $source->html_url }}</span>
+                        @else
+                            <span class="box-description text-warning">Setup required — {{ $source->html_url }}</span>
+                        @endif
+                    </div>
+                </a>
             @endif
         @empty
             <div>