- Implements all placeholder Go examples in the `examples` directory.
- Corrects the `run_matrix_programmatically` example to use the `borg` package.
- Refactors the code to centralize the matrix execution logic in the `matrix` package.
- Updates the documentation to include a new "Programmatic Usage" section that describes all of the Go examples.
- Updates the "Terminal Isolation Matrix" section to remove manual 'runc' instructions, emphasizing that 'borg run' handles this process to maintain security and isolation.
- Adds missing examples for 'collect github repos', 'collect github release', and 'compile' commands to the documentation.
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.
