This moves to Rust 1.86 as were prior on Rust 1.81, and the new alloy
dependencies require 1.82.
The revm API changes were notable for us. Instead of relying on a modified call
instruction (with deep introspection into the EVM design), we now use the more
recent and now more prominent Inspector API. This:
1) Lets us perform far less introspection
2) Forces us to rewrite the gas estimation code we just had audited
Thankfully, it itself should be much easier to read/review, and our existing
test suite has extensively validated it.
This resolves 001 which was a concern for if/when this upgrade occurs. By doing
it now, with a dedicated test case ensuring the issue we would have had with
alloy-core 0.8 and `validate=false` isn't actively an issue, we resolve it.
This allows the CREATE code to bork without the Serai router losing access to
the coins in question. It does incur overhead on the deployed contract, which
now no longer just has to query its balance but also has to call the
transferFrom, but its a safer pattern and not a UX detriment.
This also improves documentation.
Adds a minimal amount of packages. Does add decent complexity. Avoids having
constants which aren't exact, due to things like the quadratic memory cost, and
the issues with such estimates accordingly.
Completes the `Executed` enum in the router. Adds an `Escape` struct. Both are
needed for testing purposes.
Documents the gas constants in intent and reasoning.
Adds modernized tests around key rotation and the escape hatch.
Also updates the rest of the codebase which had accumulated errors.
