Enhance documentation and workflow management in EspoCRM

- Update README.md to include a table of contents and detailed sections on workflow management and custom scripts.
- Remove deprecated 'runWorkflow' field from CVmhErstgespraech localization files.
- Add 'runWorkflow' field to detail layout for CVmhErstgespraech.
- Update workflow_manager.php to improve workflow listing and management functionality.
- Adjust cache timestamps in config.php.
- Create CUSTOM_DIRECTORY.md to outline the custom directory structure and best practices.
- Add README.md for workflow definitions with usage examples and JSON format specifications.
- Introduce new workflow definitions for 'vmh-erstberatung-abschließen' and its backup.

custom/Espo/Custom/Resources/i18n/en_US/CVmhErstgespraech.json

@@ -60,7 +60,6 @@
         "contact": "Contact",
         "nchsterAnruf": "Next Call",
         "dokumentesvmherstgespraech": "Documents",
-        "runWorkflow": "Run Workflow",
         "testArray": "Test Array"
     },
     "links": {