Create basic Build Order lists

[krogenth]

We'll want to keep a rough idea of opening plays we can/should make depending on knowledge we have at the time. For now, we will only consider the map size.

As such, we'll want 3 different types of opening Build Orders based on map size:

• small
• medium
• large

All Build Orders should use an std::initializer_list to define the list of std::pair's of BWAPI::Unit and int(supply used) to define when a build order should occur.

Broodwar counts the majority of units as 2 supply instead of 1, except zerglings, they are counted as 1 supply.
A good resource for various Zerg build orders can be found here: https://liquipedia.net/starcraft/Category:Zerg_Build_Orders