Add label property to the merge function

[sij411]

Summary

Added a label property to the merge() function. Unlabeled options can now be grouped and tagged by this new label.
from optique beta

Related Issue

Additional changes #390

Changes

Added a label property to the merge() function.

Benefits

Unlabeled options can now be grouped and tagged by this new label.

Checklist

• Did you add a changelog entry to the CHANGES.md?
• Did you write some relevant docs about this change (if it's a new feature)?
• Did you write a regression test to reproduce the bug (if it's a bug fix)?
• Did you write some tests for this change (if it's a new feature)?
• Did you run deno task test-all on your machine?

Additional Notes

[github-actions]

The latest push to this pull request has been published to JSR and npm as a pre-release:

Package	Version	JSR	npm
@fedify/fedify	2.0.0-pr.409.1542+36769c34	JSR	npm
@fedify/cli	2.0.0-pr.409.1542+36769c34	JSR
@fedify/amqp	2.0.0-pr.409.1542+36769c34	JSR	npm
@fedify/cfworkers	2.0.0-pr.409.1542+36769c34	JSR	npm
@fedify/denokv	2.0.0-pr.409.1542+36769c34	JSR
@fedify/elysia	2.0.0-pr.409.1542+36769c34		npm
@fedify/express	2.0.0-pr.409.1542+36769c34	JSR	npm
@fedify/h3	2.0.0-pr.409.1542+36769c34	JSR	npm
@fedify/hono	2.0.0-pr.409.1542+36769c34	JSR	npm
@fedify/nestjs	2.0.0-pr.409.1542+36769c34		npm
@fedify/next	2.0.0-pr.409.1542+36769c34		npm
@fedify/postgres	2.0.0-pr.409.1542+36769c34	JSR	npm
@fedify/redis	2.0.0-pr.409.1542+36769c34	JSR	npm
@fedify/sqlite	2.0.0-pr.409.1542+36769c34	JSR	npm
@fedify/sveltekit	2.0.0-pr.409.1542+36769c34	JSR	npm
@fedify/testing	2.0.0-pr.409.1542+36769c34	JSR	npm

[github-actions]

The docs for this pull request have been published:

https://8f3d712b.fedify.pages.dev