feat: add ERC721/ERC1155 resolver

[Sekhmet]

Closes: #25

It adds NFT resolver for ERC721/ERC1155.
One issue I encountered is that OpenSea metadata URL always return 404 for ERC1155s and I'm not sure why - you can check test case for more details. fixed, was due to loss of precision when converting tokenIds.

• Go to http://localhost:3000/nft/0x7f8162f4ffe3db46cd3b0626dab699506c0ff63a/1 (721)
• Go to http://localhost:3000/nft/0x3b1417c1f204607deda4767929497256e4ff540c/1 (1155)

[bonustrack]

@Sekhmet The 2 examples you share are working well for me. One issue I found is with resizing, when using different width and height it crop the image, for example with this NFT:
https://opensea.io/assets/ethereum/0xedac702337b70f176423175d2f30fdf9c7a613a4/4858
I tried to render an image with same ratio but got this:

See here: http://localhost:3000/nft/0xedac702337b70f176423175d2f30fdf9c7a613a4/4858?h=444&w=305
We should instead make that the image contain the most of the origin image.

[Sekhmet]

@bonustrack fixed issue with cropping as well with OpenSea ERC1155.

[bonustrack]

I think we still need to resize the image to avoid storing too large file and make resizing later faster using the stored original file. The original image resize could work with the same max of 500 but keeping the aspect ratio

[Sekhmet]

This should be ready, tests are failing due to our Pinata instance not being able to resolve SelfIDs IPFS avatars:
https://snapshot.mypinata.cloud/ipfs/QmYxazQj8wHersDbYqr1MYRmayoPwvmnRJrJbfgxn9odXb
https://ipfs.infura.io/ipfs/QmYxazQj8wHersDbYqr1MYRmayoPwvmnRJrJbfgxn9odXb

Can we do something about it?