[API] Expose parser-hdbti functionality with a REST API

[StanZGenchev]

In order to create a form based editor for hdbti files and resolve #73 and #345 we need a REST API for sending the hdbti file contnets and getting a JSON response.

[antoanetamh]

Research for JAX-RS?

[StanZGenchev]

The output JSON should look like this:

[
  {
    "table": "someStats",
    "schema": "someStatsSchema",
    "file": "/workspace-name/project-name/folder/someStats.csv",
    "header": true,
    "useHeaderNames": true,
    "delimField": ";",
    "delimEnclosing": "\"",
    "distinguishEmptyFromNull": true,
    "keys": [
      {
        "column": "GROUP_TYPE",
        "values": [
          "BW_CUBE",
          "BW_DSO"
        ]
      }
    ]
  }
]