Support revert with custom errors (EIP 838)

[cburgdorf]

What was wrong?

We don't support custom errors as specified by EIP-838 (solidity docs have more info)

How was it fixed?

1. Added support for revert <expression> where <expression> has to be a struct. We might change that in the future to allow more flexibility with reverts. For now structs are the only way to return an EIP-838 compatible error.

E.g.

struct Error:
    msg: u256
    val: bool
    
pub def revert_custom_error():
    revert Error(msg=100, val=true)

The revert data for the above would be:

  --sig--|-----------------------------100------------------------------|---------------------------------true----------------------------
0x3253e3c700000000000000000000000000000000000000000000000000000000000000640000000000000000000000000000000000000000000000000000000000000001

2. This PR doesn't change anything about assert statements but as a recap we currently encode assert false, "foo" as if it were assert false, Error(msg="foo"). We could use the lowering pass to do the conversion but since we do not yet support String<N> in structs this continues to be a special case. But again, this PR doesn't change the existing encoding of assert it only refactors the underlying code to be more flexible and shared across revert and assert statements.

3. I added a bunch of new solidity tests that prove that the error coding on their end works similar to ours

[codecov-commenter]

Codecov Report

Merging #464 (f8a8809) into master (7c08919) will increase coverage by 0.00%.
The diff coverage is 97.02%.

❗ Current head f8a8809 differs from pull request most recent head b289056. Consider uploading reports for the commit b289056 to get more accurate results

@@           Coverage Diff           @@
##           master     #464   +/-   ##
=======================================
  Coverage   87.31%   87.31%           
=======================================
  Files          75       76    +1     
  Lines        4966     5046   +80     
=======================================
+ Hits         4336     4406   +70     
- Misses        630      640   +10     

Impacted Files	Coverage Δ
crates/parser/src/ast.rs	48.88% <ø> (ø)
crates/yulgen/src/runtime/functions/data.rs	100.00% <ø> (ø)
crates/yulgen/src/runtime/functions/mod.rs	100.00% <ø> (ø)
crates/abi/src/utils.rs	71.42% <66.66%> (ø)
crates/test-utils/src/lib.rs	82.72% <93.54%> (-1.76%)	⬇️
crates/analyzer/src/namespace/types.rs	82.90% <100.00%> (+0.17%)	⬆️
crates/analyzer/src/traversal/functions.rs	91.12% <100.00%> (ø)
crates/lowering/src/mappers/functions.rs	99.16% <100.00%> (ø)
crates/parser/src/grammar/functions.rs	90.16% <100.00%> (+0.33%)	⬆️
crates/yulgen/src/context.rs	100.00% <100.00%> (ø)
... and 9 more

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[g-r-a-n-t]

very nice 😎