add custom chain via ws url

[flipchan]

Hey,

Cool project,
Would be dope if users could add a custom chain in the drop down menu. Like have a "add custom ws url":

Then parachains and paseo users could easily use it,

Cheers

[itsyogesh]

Hey @flipchan thank you for the issue. I have to verify support for custom chains in all the modules so opening the custom ws port might be an issue. I've added Paseo testnet support in PR #33 so you can start testing.

The chain selector now includes Paseo and you can find it in the chain switcher.

Let me know if you have any other feedback!