This commit adds two new Go programs to the `examples` directory to
demonstrate how to use the `pkg/matrix` and `pkg/datanode` packages
programmatically:
- `examples/create_matrix_programmatically`: Shows how to create a
`.matrix` file from scratch.
- `examples/run_matrix_programmatically`: Shows how to unpack and execute
a `.matrix` file using `runc`.
The `examples` directory has been reorganized to place each runnable
example in its own subdirectory, which is the standard Go practice for
handling multiple `main` packages.
This change introduces optional compression to the `collect` commands. Users can now specify `--compression` with `gz` or `xz` to compress the output. The `serve` command has also been enhanced to transparently decompress and serve these files.
This change adds a 'docs/README.md' file with command-line documentation and an 'examples' directory containing scripts to demonstrate the tool's usage. It also includes a Go program to inspect the contents of a DataNode.
