Support deploy time linking

[smiasojed]

Add support for deploy time linking to compile this code correctly:

// SPDX-License-Identifier: GPL-3.0

pragma solidity >=0.7.0 <0.9.0;

library Assert {
    function equal(uint256 a, uint256 b) public pure returns (bool result) {
    result = (a == b);
  }
}

contract TestAssert {
    function checkEquality(uint256 a, uint256 b) public pure returns (string memory) {
        Assert.equal(a, b);
        return "Values are equal";
    }
}

[xermicus]

We might be able to use the auxdata field for storing the placeholders.

[filip-parity]

FYI currently this 2 .sol files setup:

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.29;

import {FooLib} from "src/FooLib.sol";
struct Bar {
    uint8 x;
}
contract Foo {
    mapping(uint256 => Bar) bars;
    function checker(uint256 id) external {
        Bar memory b = bars[id];
        FooLib.check(b);
    }
    function checker2() external {
        FooLib.check2(this);
    }
}

// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.29;

import {Foo, Bar} from "src/Foo.sol";
library FooLib {
    function check(Bar memory b) public {}
    function check2(Foo f) public {}
}

returns upon compile the following error:

Contract `src/Foo.sol:Foo` compiling error: The contract `src/Foo.sol:Foo` LLVM IR generator definition pass error: Library `src/FooLib.sol:FooLib` not found in the projectThe contract `src/Foo.sol:Foo` LLVM IR generator definition pass error: Library `src/FooLib.sol:FooLib` not found in the project


Stack backtrace:
   0: std::backtrace::Backtrace::create
   1: anyhow::error::<impl anyhow::Error>::msg
   2: <revive_solidity::process::native_process::NativeProcess as revive_solidity::process::Process>::call
   3: core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &mut F>::call_once
   4: rayon::iter::plumbing::Folder::consume_iter
   5: rayon::iter::plumbing::bridge_producer_consumer::helper
   6: <rayon_core::job::StackJob<L,F,R> as rayon_core::job::Job>::execute
   7: rayon_core::registry::WorkerThread::wait_until_cold
   8: rayon_core::registry::ThreadBuilder::run
   9: std::sys::backtrace::__rust_begin_short_backtrace
  10: core::ops::function::FnOnce::call_once{{vtable.shim}}
  11: std::sys::pal::unix::thread::Thread::new::thread_start
  12: __pthread_cond_wait
make: *** [test] Error 1

---

After updating public to internal the 2 .sol files are compiled as expected.