Features 2308 - Additional work on the task.

[*] Added import from libdapConnector module correctly. Now no need for every call from libdapConnector no need to add module name

The function dap_dane has been changed, the closing of the configuration file has been added. Changed the test, removed the extra line break.

Changed the connection string of the python library. I used to have version 2.7 and 3.7. Therefore, you had to specify a directory.

Added configuration file for Travis CI. I tried to write the configuration, the library was assembled and then the test was started.

I brought the file with the main_test test in order. Now main_test.py returns the final code, creates a configuration file as in libdap, so that the test passes, replaces all print with logIt.

Fixed log_it function. Previously, it contained an error and changed, stouting logging instead of displaying on the screen. Removed unnecessary function, no longer due to the implementation of the enumeration of the logging level in the libdapConnector

Corrected. Now the log_it function accepts not JSON as input, but two parameters — the level of logging and the displayed string.
Corrected. The setLogLevel function does not accept a string with a level name, but a parameter from the LogLevel enumeration.
Accordingly, the LogLevel enumeration has been added, which contains logging levels from debug to critical.

Redid the libdapConnector. Now it is not built on class, but on functions, as was indicated in the problem.

Removed the parameter in the function dannite. Since it should not accept parameters and now it complies with the Python calling convention

Features 2308

Changed initialization and log_it function. Now functions accept not one line with the separation of the characters '\n', but several parameters separated by commas.

Added functions configGetItem and configGetItemDefault. They accept a section, a key, and the second function accepts a default value. These functions take parameters as strings and return string. Also added a test for these functions.

Features 2308 - initialization of libdap library

The wrapping of the log_it function has been added, a test has also been added for the fact that it works

Added check of return values ​​and call exceptions. The call to the install logging level function from libdap_python_mod is also executed.

Added checks for successful opening of the configuration file and initialization of dap_common. The function of setting the logging level is also added.

PkgConfig search disabled. And also removed the JSON-c connection as unnecessary. Added, copying to the binary directory of the file main_test.py from the test folder.

The problem with the names was fixed, the library itself is now called libdap_python_module. The libdapConnector.py file was also created, which contains the dap class, and is responsible for working with libdap_python_module. Fixed CMake file so that subprojects are built with the -fPIC flag. Until I learned to collect dynamic libraries and set certain parameters in CMake. Also added that when cmake is running from the src directory, it copies the file libdapConnector.py.

Added initialization, deinitialization of the libdap library. Also added functions with which this library is connected to the python