Implement the module mapping pass

This pass runs an analysis of LLVM modules to resolve all top-level
entities. The results are written out as pass data, and are intended for
use as part of a consistency check during the compilation to FLO.

As part of implementing this pass, this commit also implements:

- A proxy for the portions of the LLVM type system that we support,
  enabling us to do pre- and during-compilation consistency checking
  where necessary.
- A parser for LLVM's data-layout specifications, allowing us to ensure
  that the provided modules are not making any assumptions that would be
  unsafe for our target machine.

Cargo.toml

@@ -30,14 +30,6 @@ rust-version = "1.81.0"
 [workspace.dependencies]
 anyhow = "1.0.89"
 ariadne = "0.4.1"
-cairo-lang-compiler = "2.8.2"
-cairo-lang-debug = "2.8.2"
-cairo-lang-diagnostics = "2.8.2"
-cairo-lang-eq-solver = "2.8.2"
-cairo-lang-lowering = "2.8.2"
-cairo-lang-semantic = "2.8.2"
-cairo-lang-sierra-generator = "2.8.2"
-cairo-lang-utils = "2.8.2"
 clap = "4.5.16"
 inkwell = { version = "0.5.0", features = ["llvm18-0"] }
 itertools = "0.13.0"

crates/cli/src/main.rs

@@ -1,5 +1,5 @@
 //! This is the CLI driver for the compilation of LLVM IR to Cairo. For more
-//! detail, please see the documentation for the crate [`ltc_compiler`].
+//! detail, please see the documentation for the [`ltc_compiler`] crate.
 
 #![warn(clippy::all, clippy::cargo, clippy::pedantic)]
 #![allow(clippy::module_name_repetitions)] // Allows for better API naming

crates/compiler/Cargo.toml

@@ -15,10 +15,7 @@ rust-version.workspace = true
 
 [dependencies]
 bimap = "0.6.3"
-cairo-lang-compiler.workspace = true
-cairo-lang-debug.workspace = true
-cairo-lang-lowering.workspace = true
-cairo-lang-semantic.workspace = true
+chumsky = "0.9.3"
 clap.workspace = true
 derivative = "2.2.0"
 downcast-rs = "1.2.1"