Feat: steal core NFTs and collections

[IVSOP]

Adds feature described in #391, allowing changing ownership of a core NFT and authority of a core collection, through the new surfnet_stealCore endpoint.

Example request, stealing this random core NFT

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "surfnet_stealCore",
  "params": [
    "2mNhQ5GHcn2y4CtR32LSKvhNzRumeVH1PMkFdACwqtNz",
    "<key of the new owner>"
  ]
}

[MicaiahReid]

Thanks for the PR, @IVSOP! This helps me understand the feature better.

Thoughts @lgalabru and @IVSOP on this PR as-is vs two cheatcodes:

• surfnet_setMplCollection - sets data according to this struct https://docs.rs/mpl-core/latest/mpl_core/accounts/struct.BaseCollectionV1.html
• surfnet_setMplAsset - sets data according to this struct https://docs.rs/mpl-core/latest/mpl_core/accounts/struct.BaseAssetV1.html

This would make each endpoint more "full-featured", like surfnet_setAccount/surfnet_setTokenAccount

[IVSOP]

I didn't split the endpoint because the logic is the exact same (just write a key into data[1..33]). If you want to set the full data, then I think having two separate cheatcodes would be cleaner. as the arguments and logic would be slightly different.
In the future, if you want to also change the plugin information, then it would make even more sense to split into two cheatcodes, so this is future proofing as well