Use mimalloc to avoid bash's non thread safe allocator (#771)

It turns out that bash overrides the global allocator. Flyline defaults
to using that non thread safe allocator.
So if multiple threads are (de)allocating rust objects like Vec
simultaneously, it can cause heap corruption.

Hopefully this fixes #770

Author: HalFrgrd

Cargo.lock

@@ -11,6 +11,7 @@ disallowed_methods = "deny"
 crate-type = ["cdylib"]
 
 [dependencies]
+mimalloc = { version = "0.1.52", default-features = false }
 clap = { version = "4.6.1", features = ["derive"] }
 clap_complete = { version = "4.6.3", features = ["unstable-dynamic"] }
 ratatui = { git = "https://github.com/Marlinski/ratatui.git", rev = "fd8e0f024847af467129e0a166390d7e291c1b2e", features = ["default", "unstable-rendered-line-info", "serde"] }

Cargo.toml

@@ -1,6 +1,9 @@
 use libc::{c_char, c_int};
 use std::sync::Mutex;
 
+#[global_allocator]
+static GLOBAL: mimalloc::MiMalloc = mimalloc::MiMalloc;
+
 pub const FILENAME_INFERENCE_LIMIT: usize = 5000;
 
 #[cfg(feature = "pre_bash_4_4")]