Gel CLI

[joshuanianji]

Closes #68

[Copilot]

Pull Request Overview

This PR introduces updated documentation for the CLI while deprecating the old EdgeDB CLI in favor of the new Gel CLI.

• Adds a comprehensive NOTES.md for the Gel CLI clarifying usage and configuration.
• Updates the EdgeDB CLI NOTES.md with deprecation notes, directing users to the Gel CLI repository.

Reviewed Changes

Copilot reviewed 2 out of 6 changed files in this pull request and generated no comments.

File	Description
src/gel-cli/NOTES.md	Introduces updated documentation for the Gel CLI usage and volume mounts.
src/edgedb-cli/NOTES.md	Adds deprecation notes and instructions to redirect users to the Gel CLI.

Files not reviewed (4)

• src/edgedb-cli/devcontainer-feature.json: Language not supported
• src/gel-cli/devcontainer-feature.json: Language not supported
• src/gel-cli/install.sh: Language not supported
• src/gel-cli/oncreate.sh: Language not supported

Comments suppressed due to low confidence (1)

src/edgedb-cli/NOTES.md:7

• Consider updating this usage note to reflect the deprecation by replacing 'EdgeDB' and 'edgedb ui' with 'Gel' and 'gel ui' to maintain consistency with the deprecation notice.

**The EdgeDB instance should not be in the same container as the CLI.** My experience doing so makes the `edgedb ui` command start failing once you restart the container. I recommend the following options: