wkg wit update still a todo

[ricochet]

wkg wit update has a todo!() panic.

https://github.com/bytecodealliance/wasm-pkg-tools/blob/main/crates/wkg/src/wit.rs#L152C12-L152C13

I want to be able to refer to a wit world and opt to overwrite my current set of dependencies and update my lock file. In order to workaround this, I had to use wkg get --overwrite instead: https://github.com/bytecodealliance/wasmtime/blob/main/ci/vendor-wit.sh#L45

[mkatychev]

@ricochet can you assign this to me?

[mkatychev]

Relevant block:

wasm-pkg-tools/crates/wkg/src/wit.rs

Lines 135 to 153 in f0a896f

	pub async fn run(self) -> anyhow::Result<()> {
	check_dir(&self.dir).await?;
	let client = self.common.get_client().await?;
	let wkg_config = wasm_pkg_core::config::Config::load().await?;
	let mut lock_file = LockFile::load(false).await?;
	// Clear the lock file since we're updating it
	lock_file.packages.clear();
	wit::fetch_dependencies(
	&wkg_config,
	self.dir,
	&mut lock_file,
	client,
	self.output_type.unwrap_or_default(),
	)
	.await?;
	// Now write out the lock file since everything else succeeded
	lock_file.write().await?;
	todo!()
	}