feat: filterv2 support

[richard-ramos]

• [x] Rename and deprecate current filter functions to LegacyFilter
• [x] filterV2 subscribe
• [x] filterV2 unsubscribe
• [x] filterV2 ping
• [x] filterV2 unsubscribe_all
• [ ] tests

[richard-ramos]

Weekly Update

• achieved: added support for unsubscribe, ping and unsubscribe_all filterv2 functions of go-waku c-bindings
• next: add support to subscribe

[richard-ramos]

Weekly Update

• achieved: added support to waku_filter_subscribe
• next: write unit tests for filterv2 and publish new version

[richard-ramos]

Weekly Update

• achieved: fix issues found during testing
• next: publish new version