- Refactor repo away from monorepo structure into something more standard/maintainable
   - Project dependencies have been simplified to [`python > 3.9`](https://www.python.org/downloads/), [`hatch`](https://hatch.pypa.io/latest/install/#pip), and [`bun`](https://bun.sh/).
   - All tool chain commands are now funneled through `hatch` with commands being [near identical to our other repos](https://reactive-python.github.io/reactpy-router/latest/about/contributing/).
   - Documentation commands have an optional dependency of [`docker`](https://www.docker.com/pricing/), which is primarily used for deployment.
- Replace `react` usage with `preact/compat` within `@reactpy/client`.
   - This was previously being done via build-time name substitutions, but realistically ReactPy is the only user of `@reactpy/client`, so we may as well "clean up" the build path for ourselves. 
- Remove tests for `module_from_template` due to unfixable failures

* Always render script element as plain HTML

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Co-authored-by: James Hutchison <122519877+JamesHutchison@users.noreply.github.com>

Bumps most of the JavaScript dependencies to their latest versions

Some dependencies, such as `@types/react-dom` and `happy-dom` are kept on older versions due to them having critical breaking changes.