Add Script for On Demand vs. Reservation Analysis

[afleisc]

Some workloads are more cost efficient in one model or the other.

• Analyzing on-demand -> reservation can be calculated by (tb_billed * on_demand_rate). Comparing this value to purely autoscaling can be safe indication that the project will be cheaper in reservation model.

• Analyzing reservation -> on-demand is more complex because it must analyze the current baseline + autoscaling setup and compare it to on-demand cost.

Add one script or separate scripts that compare the models and provide ddl across an organization