Implement Waku Filter Protocol

[D4nte]

Problem

The Waku Filter protocol allow light clients to save bandwidth but only receiving messages of the target content topic, and not relaying/forwarding messages. See https://rfc.vac.dev/spec/12/ for details.

DoD

• [ ] Filter protocol implemented with tests using nim-waku
• [ ] Doc published with new example that demonstrate filter used with light push

[D4nte]

Effort already made to make it work with go-waku. Need to test/merge:

• https://github.com/status-im/go-waku/pull/241
• https://github.com/status-im/js-waku/pull/711

[D4nte]

Initial implementation done: https://github.com/status-im/js-waku/pull/762 but only works in NodeJS with a listening node.

Blocked by:

• https://github.com/status-im/go-waku/issues/245
• https://github.com/status-im/nwaku/issues/948

[danisharora099]

Initial implementation done: #762 but only works in NodeJS with a listening node.

Blocked by:

* [Filter does not push messages to js-waku in the Browser go-waku#245](https://github.com/waku-org/go-waku/issues/245)

* [Waku Filter In The Browser nwaku#948](https://github.com/waku-org/nwaku/issues/948)

I see both the PRs have been merged. Is the status updated?

cc @fryorcraken

[fryorcraken]

Yep done :)