feat(`cast`): consolidate conversion commands

[0xClandestine]

Component

Cast

Describe the feature you would like

Motivation

Cast is getting bloated with excessive conversion commands, increasing cognitive load when trying to remember/find the right one.

Proposal

Create a cast convert subcommand to group all conversion-related commands, similar to how cast wallet groups wallet operations.

Before:

cast to-wei 1 ether
cast from-utf8 "hello"

After:

cast convert to-wei 1 ether
cast convert from-utf8 "hello"

Additional context

Proposed (26) commands to consolidate under cast convert

• from-wei, to-wei, to-unit
• from-fixed-point, to-fixed-point
• format-units, parse-units
• to-hex, to-dec, to-base
• to-int256, to-uint256
• from-utf8, to-utf8, to-ascii, from-bin
• to-bytes32, to-hexdata
• format-bytes32-string, parse-bytes32-string, parse-bytes32-address
• to-check-sum-address, concat-hex, pad
• to-rlp, from-rlp

[dipanshuhappy]

Happy to work on this if approved

[grandizzy]

makes sense to group them, would be nice to avoid breaking change if possible, @dipanshuhappy going to assign this to you if still up to implement it, thanks!

[dipanshuhappy]

makes sense to group them, would be nice to avoid breaking change if possible, @dipanshuhappy going to assign this to you if still up to implement it, thanks!

Yep I am still up to take it

[0xClandestine]

makes sense to group them, would be nice to avoid breaking change if possible, @dipanshuhappy going to assign this to you if still up to implement it, thanks!

Was kinda hoping for a breaking change here, cast as-is has a ton of commands and they're only growing - hence the point on cognitive load. Another good reason is LLM prompting, much easier for an LLM to reason about using a single cast command as opposed to 30.

https://github.com/0xClandestine/foundry-mcp-rs