[Console] added JSON descriptors
[Console] added markdown descriptors
[Console] added forgotten headers
[Console] removed unused methods (tests broken)
[Console] fixed tests
[Console] implemented Command's descriptor in text format
[Console] implemented Command's descriptor in XML format
[Console] added tests for Command's descriptor in text format
[Console] added tests for Command's descriptor in raw text format
[Console] added tests for Command's descriptor in XML format
[Console] added Application's descriptor in text format
[Console] added Application's descriptor in XML format