Increasing control over distribution rates

At the moment, the protocol independently sets the distribution rates for the pools, depending on the utilization rate. In most cases this is a perfectly good solution, but sometimes more control is required and in such cases a manual setting option is required.
Many of you have observed that there are times when the distribution rate on stablecoins or other pools is much higher than in the PIE pool. In such cases, a manual rate-setting would help change this.

New controller: defipie-protocol/Controller.sol at master · DefiPie/defipie-protocol · GitHub