Add step to install Genkit Agent Skills to get-started.mdx

[chrisraygill]

This PR adds a step to install Genkit Agent Skills using the skills CLI to the Get started guide.

[gemini-code-assist]

Code Review

This pull request adds a new section to the 'Get Started' documentation for installing Genkit Agent Skills using a CLI command. The review feedback suggests clarifying the Node.js requirement for users of other languages and correcting the package name to use the proper @genkit-ai scope while providing examples for multiple package managers.

[gemini-code-assist]

The npx command requires Node.js, which is not listed as a prerequisite for Go, Dart, or Python users in this guide. Since this section is visible to all users regardless of their chosen language, please add a brief note clarifying that Node.js is required for this step.

To provide your AI assistant with structured knowledge about Genkit, you can install the Genkit Agent Skills using the skills CLI (requires Node.js):

[gemini-code-assist]

Per the general rules, documentation should specify supported package managers like npm or pnpm. Additionally, please verify the package name; Genkit packages are typically scoped under @genkit-ai. Using the scoped name @genkit-ai/skills ensures the correct CLI is installed and avoids potential conflicts with unrelated packages named skills.

npx @genkit-ai/skills add genkit-ai/skills
# or
pnpm dlx @genkit-ai/skills add genkit-ai/skills

References

1. In documentation, specify supported package managers like npm or pnpm for installation instructions, rather than using generic phrases like 'your favorite package manager'.