Implement simple benchmarks for instantiation.

This adds benchmarks around module instantiation using criterion.

Both the default (i.e. on-demand) and pooling allocators are tested
sequentially and in parallel using a thread pool.

Instantiation is tested with an empty module, a module with a single page
linear memory, a larger linear memory with a data initializer, and a "hello
world" Rust WASI program.

crates/runtime/src/instance/allocator/pooling.rs

@@ -1610,7 +1610,7 @@ mod test {
     }
 
     #[test]
-    fn test_pooling_allocator_with_memory_pages_exeeded() {
+    fn test_pooling_allocator_with_memory_pages_exceeded() {
         assert_eq!(
             PoolingInstanceAllocator::new(
                 PoolingAllocationStrategy::Random,
@@ -1631,7 +1631,7 @@ mod test {
     }
 
     #[test]
-    fn test_pooling_allocator_with_reservation_size_exeeded() {
+    fn test_pooling_allocator_with_reservation_size_exceeded() {
         assert_eq!(
             PoolingInstanceAllocator::new(
                 PoolingAllocationStrategy::Random,