docs: init synthing & deltachat

clanModules/syncthing/README.md

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+Syncthing is a free, open-source file synchronization application designed to allow users to synchronize files between multiple devices over the internet or local networks securely and privately. 
+
+It is an alternative to cloud-based file sharing services.
+
+## Usage
+
+We recommend configuring this module as an sync-service through the provided options. Although it provides a Web GUI through which more usage scenarios are supported.
+
+## Features
+
+- **Private and Secure**: Syncthing uses TLS encryption to secure data transfer between devices, ensuring that only the intended devices can read your data.
+- **Decentralized**: No central server is involved in the data transfer. Each device communicates directly with others.
+- **Open Source**: The source code is openly available for audit and contribution, fostering trust and continuous improvement.
+- **Cross-Platform**: Syncthing supports multiple platforms including Windows, macOS, Linux, BSD, and Android.
+- **Real-time Synchronization**: Changes made to files are synchronized in real-time across all connected devices.
+- **Web GUI**: It includes a user-friendly web interface for managing devices and configurations. (`127.0.0.1:8384`)
+
+## Configuration
+
+- **Share Folders**: Select folders to share with connected devices and configure permissions and synchronization parameters.
+
+!!! info
+    Clan automatically discovers other devices. Automatic discovery requires one machine to be an [introducer](#clan.syncthing.introducer)
+
+    If that is not the case you can add the other device by its Device ID manually.
+    You can find and share Device IDs under the "Add Device" button in the Web GUI. (`127.0.0.1:8384`)
+
+## Troubleshooting
+
+- **Sync Conflicts**: Resolve synchronization conflicts manually by reviewing file versions and modification times in the Web GUI (`127.0.0.1:8384`).
+
+## Support
+
+- **Documentation**: Extensive documentation is available on the [Syncthing website](https://docs.syncthing.net/).