wasi preview 2 support (#4027)

* all: wasip2 support

Co-authored-by: Randy Reddig <randy.reddig@fastly.com>

src/internal/wasi/filesystem/v0.2.0/preopens/preopens.wit.go

@@ -0,0 +1,27 @@
+// Code generated by wit-bindgen-go. DO NOT EDIT.
+
+//go:build !wasip1
+
+// Package preopens represents the imported interface "wasi:filesystem/preopens@0.2.0".
+package preopens
+
+import (
+	"github.com/ydnar/wasm-tools-go/cm"
+	"internal/wasi/filesystem/v0.2.0/types"
+)
+
+// GetDirectories represents the imported function "get-directories".
+//
+// Return the set of preopened directories, and their path.
+//
+//	get-directories: func() -> list<tuple<descriptor, string>>
+//
+//go:nosplit
+func GetDirectories() (result cm.List[cm.Tuple[types.Descriptor, string]]) {
+	wasmimport_GetDirectories(&result)
+	return
+}
+
+//go:wasmimport wasi:filesystem/preopens@0.2.0 get-directories
+//go:noescape
+func wasmimport_GetDirectories(result *cm.List[cm.Tuple[types.Descriptor, string]])