Move cranelift dependencies to wasmtime-environ (#669)

Groups all CL data structures into single dependency to be used accross wasmtime project.

crates/debug/src/transform/range_info_builder.rs

@@ -1,10 +1,10 @@
 use super::address_transform::AddressTransform;
 use super::{DebugInputContext, Reader};
 use anyhow::Error;
-use cranelift_entity::EntityRef;
-use cranelift_wasm::DefinedFuncIndex;
 use gimli::{write, AttributeValue, DebuggingInformationEntry, RangeListsOffset};
 use more_asserts::assert_lt;
+use wasmtime_environ::entity::EntityRef;
+use wasmtime_environ::wasm::DefinedFuncIndex;
 
 pub(crate) enum RangeInfoBuilder {
     Undefined,