Add support for PFCOUNT.WATCH command

[JyotinderSingh]

Add support for reactive queries on the existing PFCOUNT command by introducing PFCOUNT.WATCH.

This command should send push-responses to subscribed clients whenever the data inside the respective hash set changes.

As a part of this feature, you are also required to add support for the same to the dicedb-go SDK inside the watch_command.go file.

Reference

1. You may refer to Adds support for ZRANGE.WATCH #1047 to understand the changes required to support this command.
2. Implements Command Watch Manager and Adds GET.WATCH Command Support #924 provides more background on the feature's underlying implementation (but may not be directly relevant to this issue)

Testing

1. Ensure integration tests are added, you can refer to existing .WATCH integration tests.
2. Integration tests should include both resp tests and SDK tests.

[iamskp11]

Would like to work on this @JyotinderSingh .pls assign

[JyotinderSingh]

Would like to work on this @JyotinderSingh .pls assign

Assigned.

[arpitbbhayani]

Hello @iamskp11,

There has been no activity on this issue for the past 5 days.
It would be awesome if you keep posting updates to this issue so that we know you are actively working on it.

We are really eager to close this issue at the earliest, hence if we continue to see the inactivity, we will have to reassign the issue to someone else. We are doing this to ensure that the project maintains its momentum and others are not blocked on this work.

Just drop a comment with the current status of the work or share any issues you are facing. We can always chip in to help you out.

Thanks again.

[iamskp11]

Just an update : currently testing the implementation. Will be raising PR by tomorrow EOD