feat: auto-import erc20 tokens after fork

[ditto-eth]

Fixes #56

Works but there are a few things I'm not sure about (feel free to just fix and merge as well)

• GetLogsParameters typing is painful (only figured it out by copying the same idea from another one relating to blocks)
• useGetLogs should probably be cached in a different way (or does it matter if it querys the same logs from fork to latest when it doesn't need to, technically one could save another cache of the last fetched block per chain per user but might be too much to save/invalidate later)
• when should this useImportTransferredTokens be called? right now it's just called whenever the account details screen is rendered (this also has the effect that if you are already on the screen it won't refresh until you go back to it?)
• for future: event Transfer(address indexed from, address indexed to, uint256) is the same event for both erc20/erc721? I'm not sure how that will be saved, like if it should be in the same store (all tokens, with an extra field to say whether it's erc20 or 721, or etc), since you don't know it based on the address ahead of time

[jxom]

Ideally, this might be better invoked from within a "sync component" in src/index.ts, and only called once (see SyncBlockNumber for prior art).

After initial sync, we should then keep track of transferred tokens from within usePendingBlock, and make the block range fromBlock = prevBlock.number, and toBlock = block.number (still using useGetLogs). This will solve your issue of tokens not invalidating until you return to the account details screen.

[jxom]

We can also add gcTime: Infinity and staleTime: Infinity (ONLY IF fromBlock and toBlock are numbers, not tags) as we know that logs are immutable when queried against a block number.