Proposal to add a threshold to only pay out AMM rewards to pairs with a minimum average AMM volume

The proposal addresses gaming of Aquarius's AMM reward system. Pairs with insignificant volume are receiving disproportionate rewards, creating voting power imbalances. By setting a 0.5% minimum average volume threshold, only genuine liquidity pools would qualify for rewards. Pairs like XLM/AQUA (currently at 2.4% volume) would remain unaffected. Pairs below the threshold would receive no AMM rewards, with those redistributed to higher-volume pairs, better aligning incentives with actual trading activity.