Add example usage of our Reflection API to the docs

[fabian-hiller]

Related to https://github.com/fabian-hiller/valibot/pull/211#issuecomment-1817864021 of @ciscoheat we should add sample code to our documentation that can be copied to easily read the metadata of a schema.

[dosubot[bot]]

Hi, @fabian-hiller. I'm Dosu, and I'm helping the Valibot team manage their backlog. I'm marking this issue as stale.

Issue Summary:

• Proposal to enhance documentation with example code for using the Reflection API.
• Suggestion originated from feedback during a prior pull request discussion.
• No further activity or comments since the issue was created.

Next Steps:

• Please confirm if this issue is still relevant to the latest version of the Valibot repository by commenting here.
• If there is no further input, the issue will be automatically closed in 30 days.

Thank you for your understanding and contribution!

[fabian-hiller]

Don't mark it as stale. I will work on it soon.

[dosubot[bot]]

Hi, @fabian-hiller. I'm Dosu (https://dosu.dev), and I'm helping the Valibot team manage their backlog and am marking this issue as stale.

Issue Summary

• You requested adding example usage of the Reflection API to the documentation to help users read schema metadata.
• This was inspired by a comment from @ciscoheat.
• The issue was marked as stale due to inactivity, but you responded promptly confirming you will work on it soon.
• The issue remains open and active with plans for implementation.

Next Steps

• Please let me know if this issue is still relevant to the latest version of Valibot by commenting here to keep the discussion open.
• Otherwise, this issue will be automatically closed in 30 days.

Thanks for your understanding and contribution!