QC optimizer doesn't support a custom parameter matrix

[D1mi3]

Expected Behavior

The QC optimizer should be able to receive a custom 2D matrix of parameters and values such as:

{param_1: [1, 2, 5],
param_2: [10, 15, 35]}

Actual Behavior

The QC optimizer only supports a range of values for each parameter with a static step value, which means that consecutive values in each parameter vector must be equally distant one from another. This poses a problem since a lot of times the sensitive parameter values are found at irregular intervals, and trying every intermediate value in their range increases the optimization cost by a large margin. For example:

# 9 combinations
{param_1: [1, 2, 5],
param_2: [10, 15, 35]}

# vs 30 combinations
{param_1: [1, 2, 3, 4, 5], # step =1
param_2: [10, 15, 20, 25, 30, 35]} # step = 5

Potential Solution

Implementing logic for handling a 2D parameter-value matrix.

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