Add support for the experimental wasi-crypto APIs (#2597)

* Add support for the experimental wasi-crypto APIs

The sole purpose of the implementation is to allow bindings and
application developers to test the proposed APIs.

Rust and AssemblyScript bindings are also available as examples.

Like `wasi-nn`, it is currently disabled by default, and requires
the `wasi-crypto` feature flag to be compiled in.

* Rename the wasi-crypto/spec submodule

* Add a path dependency into the submodule for wasi-crypto

* Tell the publish script to vendor wasi-crypto

crates/misc/run-examples/src/main.rs

@@ -83,7 +83,8 @@ fn main() -> anyhow::Result<()> {
                     .arg("userenv.lib")
                     .arg("ntdll.lib")
                     .arg("shell32.lib")
-                    .arg("ole32.lib");
+                    .arg("ole32.lib")
+                    .arg("bcrypt.lib");
                 if is_dir {
                     "main.exe".to_string()
                 } else {