feat: re-export http::Method

Technically we would need to re-export way more stuff to allow people to
implement `HttpRequestValidator` without extra dependencies, but that
seems like a never-ending tail. However `Method` is used by our simple
`Matcher`/`AllowCertainHttpRequests` and I feel that at least they
should work without fudging with more dependencies.

Author: crepererum

host/src/http.rs

@@ -2,7 +2,7 @@
 
 use std::{borrow::Cow, collections::HashSet, fmt};
 
-use http::Method;
+pub use http::Method;
 use wasmtime_wasi_http::body::HyperOutgoingBody;
 
 /// Validates if an outgoing HTTP interaction is allowed.