AoC2019: A C++ repository from ileonte

Advent of Code 2019 - https://adventofcode.com/2019

> git clone --recurse-submodules https://github.com/ileonte/AoC2019.git aoc2019
> cd aoc2019
> mkdir build_dir
> cd build_dir
> cmake .. -DCMAKE_BUILD_TYPE=Release
> make