AIP - 90: Revamp ANGLE token emissions

Hello, This is a proposal to revamp the way ANGLE tokens are being issued by the protocol in order to improve the efficiency of emissions while reducing the total amount of tokens issued by the protocol. ## Context Right now ANGLE emissions are voted by veANGLE holders following a pre-determined schedule to whitelisted gauges. The inflation rate is such that ANGLE emissions are decreasing every week at a rate such that they are divided by 1.5 every year. To check how many ANGLE tokens have...