add component parser

[James-Mart]

This is a stripped-down version of the graph component that simply parses components into component objects and wit files.
It should be able to be transpiled using jco into either a core wasm or js in order to use it in the browser.

[James-Mart]

This CI/CD build should succeed if we re-trigger it after this PR gets merged.

[James-Mart]

This CI/CD build should succeed if we re-trigger it after this PR gets merged.

It was merged, retriggering CI/CD now.

Still seems to be getting the same error:

error: no such command: `component`
View all installed commands with `cargo --list`

But the latest builder image has cargo component installed. Therefore I believe for CI/CD to pass here we will need another merge of the latest main into the dev/plugins branch, and then a merge of dev/plugins into dev/wit-parsing.

My recommendation is that PR reviewers verify the build locally and we merge this one without requiring a passing CI/CD.