feat: Add demo packages and some docs

.gitignore

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+target
+.wireit
+node_modules
+dist

Cargo.toml

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+[workspace]
+members = [
+  "rust/example-crate",
+]
+
+# See: https://github.com/rust-lang/rust/issues/90148#issuecomment-949194352
+resolver = "2"
+
+[workspace.dependencies]
+js-sys = { version = "0.3" }
+tracing = { version = "0.1" }
+tracing-subscriber = { version = "0.3", features = ["env-filter", "tracing-log", "json"] }
+tracing-web = { version = "0.1" }
+wasm-bindgen = { version = "0.2" }
+web-sys = { version = "0.3" }
+wit-bindgen = { version = "0.24" }
+
+[profile.release]
+opt-level = 'z'
+lto = true

README.md

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+# Common Labs
+
+Radioactive experiments. Turn back! You will find no API stability here.
+
+![A loom, by Midjourney](./docs/images/loom.jpg)
+
+## Overview
+
+Web, Node.js an Deno packages live in [./typescript](./typescript)
+
+Rust crates live in [./rust](./rust)
+
+Refer to [./docs/tools.md](./docs/tools.md) for tool installation.
+
+Run [./scripts/component-demo.sh](./scripts/component-demo.sh) to see some fun Rust / Deno / Web tooling interop in action.

docs/tools.md

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+## Toolchains / runtimes
+
+- [Rust][rustup]
+- [Deno][deno]
+- [Node.js][nvm]
+
+### Rust toolchain variations
+
+`rustup target add wasm32-wasi`
+
+## Other tools
+
+- [wasm-tools][wasm-tools]: `cargo install wasm-tools`
+- [jco][jco]: `npm install @bytecodealliance/jco`
+
+[rustup]: https://rustup.rs/
+[deno]: https://docs.deno.com/runtime/manual/getting_started/installation
+[nvm]: https://github.com/nvm-sh/nvm?tab=readme-ov-file#installing-and-updating
+[wasm-tools]: https://github.com/bytecodealliance/wasm-tools
+[jco]: https://github.com/bytecodealliance/jco

rust/README.md

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+# Rust
+
+This workspace contains Rust that at times may run on native targets, the web, Deno, Node.js or arbitrary Wasm runtimes.
+