Feat: use zld for macOS x86 linker to reduce compile times for binaries

[sambacha]

Dramatically reduce macOS x86 compile times for binaries

Describe the feature you would like

Utilize zld for linker. macOS has recently introduced dylb improvements, you can find out more here: https://developer.apple.com/videos/play/wwdc2022/110362/?time=729

Savings of at least ~23mins

The feature I would like I have already validated. Simply use zld in CI to achieve tis.

Current compilation time for x86 MacOS

Finished release [optimized] target(s) in 31m 32s

Improved compilation time for x86 MacOS

Finished release [optimized] target(s) in 8m 34s

gh clone foundry-rs/foundry && cd foundry
RUSTFLAGS="-Clink-arg=-fuse-ld=/Users/sbacha/zld/build/Build/Products/Release/zld" cargo build --release

How to utilize this for CI?

Naive first pass

wget https://github.com/michaeleisel/zld/releases/download/1.3.8/zld.zip
unzip zld.zip
RUSTFLAGS="-Clink-arg=-fuse-ld=$PWD/zld" cargo build --release

Built Artifact

Grab the compiled binary here: https://github.com/sambacha/foundry/releases/tag/rc-macos-x86-zld-lld

Additional Information

rust-lang/rust#39915
rust-lang/compiler-team#510
https://hackmd.io/YJQSj_nLSZWl2sbI84R1qA?view

Additional context

No response

[sambacha]

This also fixes this flakey test @gakonst https://github.com/foundry-rs/foundry/actions/runs/3213033243/jobs/5252598883#step:6:633

[sambacha]

Additionally

https://github.com/foundry-rs/foundry/actions/runs/3213033243/jobs/5252598883#step:6:541

https://github.com/foundry-rs/foundry/actions/runs/3213033243/jobs/5252598883#step:6:795

     Summary [ 594.568s] 478/538 tests run: 476 passed (1 slow, 3 flaky), 2 failed, 59 skipped
   FLAKY 2/4 [   7.097s]        foundry-cli::it config::can_set_solc_explicitly
   FLAKY 4/4 [  16.098s]        foundry-cli::it config::can_set_yul_optimizer
   FLAKY 2/4 [  46.243s]        foundry-cli::it script::can_broadcast_script_skipping_simulation
  TRY 4 FAIL [  11.617s]        foundry-cli::it script::can_execute_script_command_fqn
  TRY 3 FAIL [  10.304s]        foundry-cli::it script::can_execute_script_command_with_returned
error: test run failed
Error: Process completed with exit code 100.