Introduce the wasmtime-explorer crate (#5975)

This implements Godbolt Compiler Explorer-like functionality for Wasmtime and
Cranelift. Given a Wasm module, it compiles the module to native code and then
writes a standalone HTML file that gives a split pane view between the WAT and
ASM disassemblies.

Cargo.lock

@@ -3533,6 +3533,7 @@ dependencies = [
  "wasmtime-component-util",
  "wasmtime-cranelift",
  "wasmtime-environ",
+ "wasmtime-explorer",
  "wasmtime-runtime",
  "wasmtime-wasi",
  "wasmtime-wasi-crypto",
@@ -3647,6 +3648,19 @@ dependencies = [
  "wat",
 ]
 
+[[package]]
+name = "wasmtime-explorer"
+version = "8.0.0"
+dependencies = [
+ "anyhow",
+ "capstone",
+ "serde",
+ "serde_json",
+ "target-lexicon",
+ "wasmprinter",
+ "wasmtime",
+]
+
 [[package]]
 name = "wasmtime-fiber"
 version = "8.0.0"