Migrate examples to use The Waku Network Gen 0

[fryorcraken]

• [ ] eth-pm
• [ ] light-chat
• [ ] light-js
• [ ] noise-js
• [ ] ~relay-angular-chat (should we drop relay examples?)~
• [ ] relay-direct-rtc
• [ ] ~relay-reactjs-chat (should we drop relay examples?)~
• [ ] store-js
• [ ] store-reactjs-chat
• [ ] web-chat

[chair28980]

All listed examples should use latest version of js-waku with autosharding.

[chair28980]

Need to finalize which examples will be continuously updated.

We are dropping relay examples. Might move to js-waku repo, but won't be present in js-waku-examples.