Refactor commit method of IgxHierarchicalTransactionService to accept same parameters as base type

[wnvko]

Is your feature request related to a problem? Please describe.

IgxHierarchicalTransactionService.commit accepts three optional parameters - primaryKey, childDataKey and id. In the same time IgxTransactionService.commit accepts only one optional parameter - id. This is not ok, as both methods should have their parameters in the same order.

Describe the solution you'd like

Remove primaryKey and childDataKey from IgxHierarchicalTransactionService.commit. These options could be passed in the constructor of the service or via public properties.

[wnvko]

We should create a new interface, e.g. HierarchicalTransactionService. In this new interface commit method should have two overloads:

public commit(data: any[], primaryKey: any, childDataKey: any, id?: any): void
public commit(data: any[], id?: any): void

IgxHierarchicalTransactionService should implement the new interface.