Eden Based Communities

[leisterfrancisco]

• Create a new table called global which it will be a std::variant to manage different states of the smart contract, for example: none, banning_community, ready_vote, update_weight and more.
• Create a new table called community to handle accepted communities.
• Migrate votes table to voters to remove the flag attribute and considerer to structure this table as a std::variant.
• Migrate the stats weight type from uint16_t to uint32_t. When is was developed, It was thought for only 1 community, but since it could be n communities, it's necessary to handle a higher variable type.