[UDRG] Normalize rules evaluation result score

Normalize Custom Metric evaluation result x using the thresholds and weights provided by the end user. The following steps should be followed:

• Find the threshold interval [a, b] where the result value is included.
• Normalize the value according to the following formula:

[a, b]: original interval (thresholds)

[c, d]: target interval (weights)

x: evaluation result

y: normalized result

y = c + ((x - a )*(d -c) / (b -a ))