[CLI] Path MVP CLI

[Olshansk]

Objective

Create a path CLI foundation with MVP functionality to which we will add to over time.

Origin Document

This discussion:

Along with this foundation in the poktroll repo:

Goals

• Create the foundation for the path CLI

Deliverables

• Identify which golang CLi framework we want to use; [spf13/cobra](https://github.com/spf13/cobra, https://github.com/urfave/cli
• At a minimum, provide the following functionality:
  • path gateway start; starts the gateway process and will be used as the entrypoint from docker files
  • path gateway scaffold; walks the user through a series of questions and outputs a yaml file
  • path test relay send; a helper to send a test relay
• Provide short & long help messages

Non-goals / Non-deliverables

• Create a fully-fledged and documented CLI with all the features we need

General deliverables

• Comments: Add/update TODOs and comments alongside the source code so it is easier to follow.
• Testing: Add new tests (unit and/or E2E) to the test suite.
• Makefile: Add new targets to the Makefile to make the new functionality easier to use.
• Documentation: Update architectural or development READMEs; use mermaid diagrams where appropriate.

---

Creator: @Olshansk
Co-Owners: @fredteumer @adshmh @commoddity