* Switch to pooling copy-on-write instantiation strategy for WASM
* Fix benchmark compilation
* Fix `cargo fmt`
* Fix compilation of another benchmark I've missed
* Cleanups according to review comments
* Move `max_memory_size` to `Semantics`
* Set `memory_guaranteed_dense_image_size` to `max_memory_size`
* Rename `wasm_instantiation_strategy` to `wasmtime_instantiation_strategy`
* Update the doc-comments regarding the instantiation strategy
* Extend the integration tests to test every instantiation strategy
* Don't drop the temporary directory until the runtime is dropped in benchmarks
* Don't drop the temporary directory until the runtime is dropped in tests
* Add extra WASM heap pages when precompiling the runtime blob
* Fix compilation
* Fix rustdoc
* Fix rustdoc for real this time
* Fix benches compilation
* Improve the builder in `sc-executor-wasmtime`'s tests
* Refactor WASM module instantiation; enable WASM instance pooling
* Disable the `uffd` feature on `wasmtime`
* Restore the original behavior regarding the initial WASM memory size
* Adjust error message
* Remove unnecessary import in the benchmarks
* Preinstantiate the WASM runtime for a slight speedup
* Delete the asserts in `convert_memory_import_into_export`
* `return` -> `break`
* Revert WASM instance pooling for now
* Have `convert_memory_import_into_export` return an error instead of panic
* Update the warning when an import is missing
* Rustfmt and clippy fix
* Fix executor benchmarks' compilation without `wasmtime` being enabled
* rustfmt again
* Align to review comments
* Extend tests so that both imported and exported memories are tested
* Increase the number of heap pages for exported memories too
* Fix `decommit_works` test