feat!: update relay-angular-chat example

[weboko]

Problem

This example is too old and it is hard to update @waku/* version to latest due to problem with build that appears.

Solution

Update angular related dependencies or eject webpack config and make it work with latest @waku/*.

Notes

Ref PR: #246
Original issue: logos-messaging/logos-delivery-js#1353

[fryorcraken]

I suggest we create a bounty for someone to create a small example that uses Angular.
As part of the bounty, we can set some criteria to make long term maintenance easier (if such criteria can exist)

[weboko]

I suggest we create a bounty for someone to create a small example that uses Angular. As part of the bounty, we can set some criteria to make long term maintenance easier (if such criteria can exist)

good idea, I will post an issue for bounty but I would consider this bounty low priority since we have other examples and angular is not that popular

[fryorcraken]

Let's update the example in any case and we can have a guide for it at some point cc @LordGhostX

For the bounty, tracked here: logos-messaging/bounties#2