Move all trampoline compilation to wasmtime-cranelift (#3176)

* Move all trampoline compilation to `wasmtime-cranelift`

This commit moves compilation of all the trampolines used in wasmtime
behind the `Compiler` trait object to live in `wasmtime-cranelift`. The
long-term goal of this is to enable depending on cranelift *only* from
the `wasmtime-cranelift` crate, so by moving these dependencies we
should make that a little more flexible.

* Fix windows build

Cargo.toml

@@ -21,7 +21,6 @@ path = "src/bin/wasmtime.rs"
 doc = false
 
 [dependencies]
-# Enable all supported architectures by default.
 wasmtime = { path = "crates/wasmtime", version = "0.29.0", default-features = false, features = ['cache'] }
 wasmtime-cache = { path = "crates/cache", version = "0.29.0" }
 wasmtime-debug = { path = "crates/debug", version = "0.29.0" }
@@ -45,6 +44,7 @@ rayon = "1.5.0"
 humantime = "2.0.0"
 wasmparser = "0.80.0"
 lazy_static = "1.4.0"
+cranelift-native = { path = 'cranelift/native', version = '0.76.0' }
 
 [dev-dependencies]
 env_logger = "0.8.1"