Description

Add support for the global customContext option. This option could now be passed as a part of the SDK initialisation.
This value will only be persisted in memory and not in SharedPreference.
This value will be cleared when a RESET call is made.
This value will be merged with the localOption customContext object (i.e., customContext option passed at the event level). While merging the local one would be given preference.

Type of change

[ ] Bug fix (non-breaking change which fixes an issue)
[x] New feature (non-breaking change which adds functionality)
[ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
[ ] This change requires a documentation update
Checklist:
[ ] Version upgraded (project, README, gradle, podspec etc)
[ ] My code follows the style guidelines of this project
[ ] I have performed a self-review of my own code
[ ] I have commented my code, particularly in hard-to-understand areas
[ ] I have added unit tests for the code
[ ] I have made corresponding changes to the documentation