JetSubStructureMomentTools: Modifying ECF tools for flexible configurations

This adds flexibility to the configuration of energy correlator tools such that a custom list of beta values can be provided as an argument. It has been shown that beta = 1.0 is sub-optimal for jet collections that use tracking information for JSS moments, such as TCC jets and TAR/SAT jets. These changes will allow individual analyses to optimize beta and will play an important role in retraining the W/top taggers for precision recommendations. A default value of 1.0 is always added to the list and any duplicate values are removed. The changes have been implemented in such a way to keep backwards compatibility for the existing beta configurations.