Temporarily re-export anyhow as wasmtime_environ::error (#12202)

* Temporarily re-export `anyhow` as `wasmtime_environ::error`

This is intended to ease the migration to the `wasmtime-internal-error`
crate. Follow up PRs will start moving crates in our workspace over to using
this re-export and not depending on `anyhow` directly themselves. Finally, we
will swap out this re-export for a re-export of the `wasmtime-internal-error`
crate.

* rename existing `error` module to `wasm_error`

Author: fitzgen

crates/environ/src/lib.rs

@@ -23,7 +23,6 @@ mod frame_table;
 #[macro_use]
 mod builtin;
 mod demangling;
-mod error;
 mod ext;
 mod gc;
 mod hostcall;
@@ -40,12 +39,12 @@ mod trap_encoding;
 mod tunables;
 mod types;
 mod vmoffsets;
+mod wasm_error;
 
 pub use self::ext::*;
 pub use crate::address_map::*;
 pub use crate::builtin::*;
 pub use crate::demangling::*;
-pub use crate::error::*;
 pub use crate::frame_table::*;
 pub use crate::gc::*;
 pub use crate::hostcall::*;
@@ -61,6 +60,7 @@ pub use crate::trap_encoding::*;
 pub use crate::tunables::*;
 pub use crate::types::*;
 pub use crate::vmoffsets::*;
+pub use crate::wasm_error::*;
 pub use object;
 
 pub use wasmparser;
@@ -80,5 +80,9 @@ pub mod fact;
 // one of three and making sure you're using the right one.
 pub use cranelift_entity::*;
 
+// Temporarily re-export `anyhow` as `wasmtime_environ::error` to ease the
+// migration to the `wasmtime-internal-error` crate.
+pub use anyhow as error;
+
 /// Version number of this crate.
 pub const VERSION: &str = env!("CARGO_PKG_VERSION");