Provide detailed documentation

[uniqueg]

Is your feature request related to a problem? Please describe. Detailed documentation on how to use the service are missing.

Describe the solution you'd like Write an in-depth documentation on Read the Docs. The documentation should be directed at:

• Users who want to use test the service ("demo server")
• Users who want to deploy the service (installation & configuration)
• Users who want to use our/any WES client to access the service (clarification of docs in the specs & any implementation-specific solutions)
• Developers who want to contribute to further building the service ("API" section)

Describe alternatives you've considered N/A

Additional context N/A

[fgypas]

Check also #76