Create distributable HTTP Client for all services provided by the module mod-source-record-storage

Steps

• divide the module into two modules: client, server
• change pom accordingly, create new poms for each submodule
• move the module implementation to the server folder

Acceptance criteria

• Module structure changed
• Client is provided as a separate java library
• a Jenkins job for server & client is green
• Both server & client jars are published into the artifactory
• Docker image for server module is built correctly
• The module is available on the staging environment
• Add extensive documentation for client interface and usage examples.