Change and improve copper oxidation

Copper oxidation is currently quite dull. The 'meta' for copper oxidation is having the copper placed 4≤ blocks apart. Since oxidation is affected by moisture, it could be improved by adding ways to dynamically affect the oxidation rate by speeding it up when it's in the presence of flowing water or speeding up in  the rain. Additionally, this rate could be affected by biome - deserts and mesas could be seen as 'dry' while jungles could be seen as 'wet'.