Traders used to only do greetings based on each subspecies, due to
significant overlap for some (ie, IPCs), functionality added for traders
to greet based on general species, if a specific subspecies is not
found.
Adds new defines for each species that is a list that has all subspecies
for them (ALL_IPC covers all frames for examples)
Biases for Species
DENY: "No service for Bots here"
UPCHARGE: Service, but prices higher
DISCOUNT: Special prrrices forrr comrrrades
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Co-authored-by: Ben10083 <Ben10083@users.noreply.github.com>
Port of the merchant mechanics from baystation12.
All of the trader, prices and most essential system are done, as well the job datum and the like. Mapping the shuttle, the base and a new dock will be done in a later pr.
Also adds phazon construction and several other items used in this pr.
The chance of the merchant slow being open at round start can be changed via the config, it is 20% by default.
