perf: Use custom allocator (#2768)

This PR replaces the system allocator with a custom allocator to improve performance:

* Windows: mimalloc
* Unix: tikv-jemallocator

## Performance:

* Linux
  * `cpython --no-cache`: 208.8ms -> 190.5ms
  * `cpython`: 32.8ms -> 31ms
* Mac: 
  * `cpython --no-cache`: 436.3ms -> 380ms
  * `cpython`: 40.9ms -> 39.6ms
* Windows: 
  * `cpython --no-cache`: 367ms -> 268ms
  * `cpython`: 92.5ms -> 92.3ms
  
## Size

* Linux: +5MB from 13MB -> 18MB (I need to double check this)
* Mac: +0.7MB from 8.3MB-> 9MB
* Windows: -0.16MB from 8.29MB -> 8.13MB (that's unexpected)

crates/ruff_cli/Cargo.toml

@@ -61,3 +61,9 @@ ureq = { version = "2.5.0", features = [] }
 
 [package.metadata.maturin]
 name = "ruff"
+
+[target.'cfg(windows)'.dependencies]
+mimalloc = "0.1.29"
+
+[target.'cfg(not(windows))'.dependencies]
+tikv-jemallocator = "0.5.0"

crates/ruff_cli/src/main.rs

@@ -24,6 +24,14 @@ mod iterators;
 mod printer;
 mod resolve;
 
+#[cfg(target_os = "windows")]
+#[global_allocator]
+static GLOBAL: mimalloc::MiMalloc = mimalloc::MiMalloc;
+
+#[cfg(not(target_os = "windows"))]
+#[global_allocator]
+static GLOBAL: tikv_jemallocator::Jemalloc = tikv_jemallocator::Jemalloc;
+
 enum ExitStatus {
     /// Linting was successful and there were no linting errors.
     Success,