[Toolkit] Add additional stimulation codes that can be used with drift correction

These stimulations can be used with any functionality that is susceptible to either insert samples into the stream or remove them.
These are more suitable than the current GDF_Incorrect GDF_Correct stimulations which are destined for results of BCI.

Tracker Reference: [CORE-921](https://jira.mensiatech.com/browse/CORE-921)

toolkit/share/stimulation_list.txt

@@ -320,6 +320,9 @@
  OVTK_StimulationId_ThresholdPassed_Negative OVTK_StimulationId_ThresholdPassed_Negative 0x00008210
  OVTK_StimulationId_NoArtifact OVTK_StimulationId_NoArtifact 0x00008301
  OVTK_StimulationId_Artifact OVTK_StimulationId_Artifact 0x00008302
+ OVTK_StimulationId_RemovedSamples OVTK_StimulationId_RemovedSamples 0x00008310
+ OVTK_StimulationId_AddedSamplesBegin OVTK_StimulationId_AddedSamplesBegin 0x00008311
+ OVTK_StimulationId_AddedSamplesEnd OVTK_StimulationId_AddedSamplesEnd 0x00008312
  OVTK_GDF_Artifact_EOG_Large OVTK_GDF_Artifact_EOG_Large 0x101
  OVTK_GDF_Artifact_ECG OVTK_GDF_Artifact_ECG 0x102
  OVTK_GDF_Artifact_EMG OVTK_GDF_Artifact_EMG 0x103