Ramp Time in Side Bar

I'd like ramp time to be included whenever the calculation mode combines hit dps with poison/impale dps. It's important context for the final dps number that players can miss when talking about X bajillion viper strike dps.

If the box is getting too crowded then maybe replace the "total damage per poison" stat, which doesn't seem very relevant when dps is concerned.

ramp time for poison dps = poison duration
ramp time for impale dps = max number of impales / attacks per second

Originally posted by @Sectoidfodder in https://github.com/PathOfBuildingCommunity/PathOfBuilding/pull/158#issuecomment-594084168

未指定文件或测试。首先定位侧边栏中的计算模式显示，以及现有的 poison、impale 和 total-damage-per-poison 统计项；将请求的 ramp time 公式与当前计算进行比较。完成标准是：组合 hit 加 poison/impale 的 DPS 模式能够显示 ramp time，同时不会让侧边栏过于拥挤。