Block events from groups, statuses, and more

[higorrezend]

Hello. I'm starting to use WAHA and would like to know if there is any way to block it from receiving webhooks of messages and other information from groups.

I would like to be able to inform some environment variable or configuration that would prevent messages and events from groups from being sent to my Webhook endpoint.

I would also like to be able to block it from receiving status or channel events. I want to receive events only from received messages (sent by a contact or by myself directly through the WhatsApp app). But I don't want to receive anything from groups.

[devlikepro]

Probably we could add something like https://jsonata.org/ to webhook, so you can apply any custom filters there 🤔
Similar request - #830
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