[EN TasksMode] DateTime resolution customizations for TOD and future DateTime points under TasksMode

[Neelisha-saxena]

When Datetime Options is set as Tasksmode.

1. Next week, next month, next year will get treated as date.
2. Merge next week, next month, next year with time and time range references.
3. Changing the resolution of time which have subjective references like morning, dinnertime etc.

[tellarin]

@Neelisha-saxena Build is failing here and there are some merge conflicts. I'll re-review ASAP once these are fixed, ok?

[Neelisha-saxena]

@Neelisha-saxena Build is failing here and there are some merge conflicts. I'll re-review ASAP once these are fixed, ok?

resolved merge conflicts.

[tellarin]

@Neelisha-saxena Looks good now. Please resolve the merge conflicts to merge. Thanks.