Feat: add log hints to integers parsed in verbose output

[merklefruit]

Motivation

Added log hints on Uint values printed by the logger converted in Ether.

Closes #4743

Solution

I added a simple helper: format_uint_with_ether_conversion which appends a dimmed [x ether] text at the end of the parsed Uint.

I added some heuristics to try and make the hints more useful for debugging: the conversion is skipped if the amount is 0, if it's less than 0.0001 ether or more than 1 million ether.

Notes

• I think log hints could make the debugging experience nicer, and this is just a small step in that direction
• Should there be the possibility to show these hints only on a specific verbosity level or to turn them off completely?

Preview

Here is a preview of what it looks like:

I've also tested it on uniswap/permit2 to see how it would look like on a larger codebase. Here's a test taken from that repo:

[mds1]

This seems nice, I like it, thanks! What do you think of using exponents instead, e.g. showing 1e18 instead of 1 ether? I like that better for a few reasons:

1. It's shorter, so adds less clutter
2. Not all numbers are actually ether amounts, so it might confuse users
3. It's more extensible to e.g. smartly choosing exponents or letter a user configure the exponent, e.g. if they're using USDC you can imagine a trace config (meta(tracing): tracking issue for tracing improvements #3390) where the user chooses to use e6 instead of e18

[merklefruit]

Configuration for traces sounds like a really cool feature! Definitely looking forward to it.

I like the idea of shorter exponents, I'll work on it asap.
Just few questions to better understand what you have in mind:

if we have a number like 999999999999999999000000000000000000 what should we show?

• [9.9e35], if so with how many digits of precision?
• [999999999999999999e18]
• keep the current heuristics to hide numbers greater or smaller than a sensible threshold

[mds1]

Good question, off the cuff I'd say 4-5 significant figures is probably a sane default to keep it simple for now, since you can always look directly to the left to see the full number with full precision, using your example I think [9.999e35] would be useful

[merklefruit]

Added exponential notation hints and updated PR title :)

[merklefruit]

I moved the helper function to the calc.rs file and I added more comments, docs and a few test cases

[mattsse]

smol nit, otherwise lgtm

[merklefruit]

Fixed some CI tests - should be good now

[mattsse]

whoops, sorry totally forgot about this!