chore: move forge and cast binaries to their own crates

[DaniPopes]

Motivation

Before: bad. After: slightly better.

Solution

• cli/{forge,cast} -> forge/bin,cast/bin
• cli/test-utils -> ../
• Remove forge and cast as dependencies in other crates. They should not be used as dependencies.
• split off cast tests from cli/tests, rest went into forge/tests/cli

[mattsse]

supportive, can merge once compiles

[Evalir]

same as matt—once ci is green and some smol testing is done i think we should be good to go

[Evalir]

gg, awesome