Tracking: Explicit conversions

[onbjerg]

Describe the feature

Tracking issue for implementing explicit conversions in typeck. Currently this list is non-exhaustive.

Explicit conversions are currently handled in Ty::try_explicit_convert_to.

Reference: isExplicitlyConvertibleTo in solc Types.cpp: https://github.com/argotorg/solidity/blob/aca05d4df9c6a959243d96d8be56cd1f63df8680/libsolidity/ast/Types.cpp

Additional context

No response