Mitigate collisions on hash table (Ruby)

[leandronsp]

The first implemenation of hash table in Ruby is very simple and does not handle collisions. Now, we're adding the ability to mitigate collisions by using buckets.

The current implementation also brings a scenario of collision: in Ruby, both "code" and "mode" lead to 400 when applying the current hashing function:

irb(main):001> :mode.to_s.bytes.reduce(&:*) % 500 => 400 irb(main):002> :code.to_s.bytes.reduce(&:*) % 500 => 400 irb(main):003> 

[kelvins]

Nice, thanks @leandronsp 🚀