feat: Add Global Module Settings and Caption to Images

- Introduced GlobalModuleSettings model for platform-wide module enable/disable settings.
- Added 'caption' field to Images model to store image captions.
- Updated GenerateImagePromptsFunction to handle new caption structure in prompts.
- Enhanced AIPromptViewSet to return global prompt types and validate active prompts.
- Modified serializers and views to accommodate new caption field and global settings.
- Updated frontend components to display captions and filter prompts based on active types.
- Created migrations for GlobalModuleSettings and added caption field to Images.

backend/igny8_core/admin/site.py

@@ -160,6 +160,7 @@ class Igny8AdminSite(UnfoldAdminSite):
             'Global Settings': {
                 'models': [
                     ('system', 'GlobalIntegrationSettings'),
+                    ('system', 'GlobalModuleSettings'),
                     ('system', 'GlobalAIPrompt'),
                     ('system', 'GlobalAuthorProfile'),
                     ('system', 'GlobalStrategy'),