Rename tests

test/CMakeLists.txt

test/test_clinkahead.cpp

test/test_configuration.cpp

test/test_connection.cpp

...roken_linkahead_client_certificate_file_non_existent.json

...st_data/test_broken_linkahead_client_no_connections1.json

...st_data/test_broken_linkahead_client_no_connections2.json

...st_data/test_broken_linkahead_client_no_connections3.json

test/test_data/test_linkahead.json

test/test_protobuf.cpp

test_package/conanfile.py