Skynet from getContentHash missing within the master branch, and support for other content hash types

[makhnovskiy]

Hello -

Wondering why SkyNet Hash is missing in master since this was added in a prev version:

https://github.com/ethers-io/ethers.js/blob/main/src.ts/providers/ens-resolver.ts#L329C45-L329C45
#2853

Also, ENS supports the following types, could they also be added to ethers.js?

• ONION
• ARWEAVE