The initial stuff added:
 - modules/utils - Introduces miscellaneous utility stuff like basic primitive data structures (pairs, etc.), date/time formatting utilities, and so on. This stuff will be much extended in the future.
 - modules/sort_algorithms - Introduces my old sort algorithm implementations. I plan to redevelop this stuff with usage of the utils module.
 - modules/connectivity_problem - Introduces miscellaneous solutions for the connectivity problem. The "quick-find" solution only is added for now. Other ones will be added in the future.

Signed-off-by: Nikolay Chebotaryov <rododin@gmail.com>