Migrate hawkBit documentation to GitHub Pages Initial

Signed-off-by: Denislav Prinov <denislav.prinov@bosch.com>

docs/features.md

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+# Features
+
+---
+
+## Device and Software Repository
+
+- Repository that holds the provisioning targets and assignable software distributions.  
+- Targets can be logically grouped by **Target Types**.  
+- Includes a full software update history for every device.  
+- Supports pre-commission devices in the repository and plug and play (device is created when it authenticates for the first time).  
+
+---
+
+## Update Management
+
+- Directly deploy a defined software distribution to a device (via Management API).  
+- Update handling is independent of device type, integration approach, or connectivity.  
+- Optional user consent flow: download and install updates only after the respective end user has confirmed it.  
+- Mass cancel distribution of an update by invalidating the distribution set.  
+- Use action status codes for easier analysis.  
+
+---
+
+## Artifact Content Delivery
+
+- Partial downloads supported.  
+- Download resume supported (RFC7233).  
+- Content management by RESTful API and UI.  
+- Authorization based on software assignment (a device can only download what was assigned to it).  
+- Delta artifact hosting supported.  
+- Artifact signature hosting supported.  
+- Plug-point for artifact encryption (allows encryption of artifacts on upload).  
+
+---
+
+## Rollout [Campaign] Management
+
+- Secure handling of large volumes of devices at rollout creation time.  
+- Flexible deployment group definition as part of a rollout.  
+- Monitoring of rollout progress.  
+- Emergency rollout shutdown in case of update failures.  
+- Manually trigger the next rollout group.  
+
+---
+
+## Interfaces
+
+### Management API
+- RESTful API.  
+- Create/Read/Update/Delete operations for provisioning targets (devices) and repository content (software).  
+- Manage and monitor software update operations.  
+- Online API documentation.  
+- JSON payload with Hypermedia support.  
+- Supports filtering, sorting, and paging.  
+
+### Direct Device Integration API
+- RESTful HTTP-based API for direct device integration.  
+- JSON payload.  
+- Traffic optimized (content-based ETag generation, not modified).  
+- Feedback channel from device.  
+- TLS encryption.  
+
+### Device Management Federation API
+- Indirect device integration through a device management service or application into hawkBit.  
+- Optimized for high service-to-service throughput with AMQP messaging interface.  
+- Separate AMQP vHost per tenant for maximum security.