[Enabler] Filtering events - refactor code

[glass-ships]

'- doc update on EventList:FilterInPlace:

• copy_if:

Description:

This will prepare mantid for the new way of filtering logs as detailed in the design document.

The work focuses on modifying private methods in DataObjects::EventList to use Kernel::TimeROI, plus a few small changes.

This enabler will cover step 6 of the "implementation notes" section of the design document.

Outline of activity:

* [ ] Add erase_if method to DataObjects::EventList

• Add copy_if method to DataObjects::EventList
• Replace the private methods
  • filterByPulseTimeHelper: should be replaced with the copy_if
  • filterByTimeAtSampleHelper: should be replaced with the copy_if
  • filterInPlaceHelper: should be refactored following maskTOF example
• [ ] Changes to Instrument
• [ ] Changes to Goniometer

[glass-ships]

This issue was migrated from code.ornl.gov.