docs: Update README with more install instructions and stuff

## Installation

> Xylem is currently only tested rigorously on Linux, full Windows support is coming soon

### Install with cargo

> 🚧 Under Construction

### Download pre-compiled binary

- Download newest binary from [releases page](https://code.ornl.gov/research-enablement/xylem/-/releases)

    ```shell

    curl -LO https://code.ornl.gov/api/v4/projects/15383/packages/generic/x86_64-unknown-linux-gnu/v0.0.5/xylem

    curl -LO https://code.ornl.gov/api/v4/projects/15383/packages/generic/x86_64-unknown-linux-gnu/v0.0.10/xylem

    ```

- Make binary executable

    ```shell

    ```shell

    mv xylem /usr/local/bin

    ```

- Verify installation with `xylem --version`

- Verify installation with `xylem help`

### Build from source

- Clone this project and navigate to it

  ```shell

  git clone https://code.ornl.gov/research-enablement/xylem

  cd ./xylem

  ```

- Install `xylem` command

  ```shell

  cargo install --path ./xylem-cli

  ```

- Test the installation

  ```shell

  xylem help

  ```

## Documentation

> **TIP** Read the code docs at https://xylem.code.ornl and/or explore the [Wiki](https://code.ornl.gov/groups/research-enablement/xylem/-/wikis/home)

> **TIP** Read the code docs at https://xylem.code.ornl and/or explore the [Wiki](https://code.ornl.gov/research-enablement/xylem/-/wikis/home)

Print the help with `xylem help` or save the configuration below to `config.json` and use `xylem run`

        {

            "name": "Meta Module",

            "type": "binary",

            "uri": "https://code.ornl.gov/api/v4/projects/15383/packages/generic/x86_64-unknown-linux-gnu/v0.0.3/xylem",

            "uri": "https://code.ornl.gov/api/v4/projects/15383/packages/generic/x86_64-unknown-linux-gnu/v0.0.10/xylem",

            "checksum": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",

            "template": {

                "command": "xylem",