Add a system to only be able to add contracts that exist within the API in #69
This also includes a system to convert the existing contracts to the templated ones
This feature is no longer needed, since it was planned for agent contracts. Agent contracts no longer exist in Valorant and have been replaced by another in game currency
Add a system to only be able to add contracts that exist within the API in #69 This also includes a system to convert the existing contracts to the templated ones