Trunk cannot build --release with wasm that uses threads / bulk memory

[BGR360]

It fails at the wasm-opt stage:

[wasm-validator error in module] unexpected false: shared memory requires threads [--enable-threads], on 
memory
[wasm-validator error in module] unexpected false: nonzero segment flags require bulk memory [--enable-bulk-memory], on 
[wasm-validator error in module] unexpected false: nonzero segment flags require bulk memory [--enable-bulk-memory], on 
[wasm-validator error in module] unexpected false: nonzero segment flags require bulk memory [--enable-bulk-memory], on 
Fatal: error validating input
2024-09-07T05:47:45.715687Z ERROR ❌ error
error from build pipeline

Caused by:
    0: HTML build pipeline failed (1 errors), showing first
    1: error from asset pipeline
    2: running wasm-opt
    3: wasm-opt call to executable '/home/runner/.cache/trunk/wasm-opt-version_116/bin/wasm-opt' with args: '["--output=/home/runner/work/dactyl/dactyl/target/wasm-opt/release/dactyl_bg.wasm", "-O", "/home/runner/work/dactyl/dactyl/dist/.stage/dactyl-50e150da88065d87_bg.wasm"]' returned a bad status: exit status: 1

I propose adding another data-... option to rust assets, similar to these ones:

trunk/src/pipelines/rust/mod.rs

Lines 157 to 158 in 14b972f

	let reference_types = attrs.contains_key("data-reference-types");
	let weak_refs = attrs.contains_key("data-weak-refs");

[BGR360]

Similar to #854 (comment), it would have been really useful for me if Trunk offered an option to pass arbitrary extra flags to wasm-opt.