fix: expose --name and --region-id flags on project create

[margaretjgu]

Summary

Closes #328.

cloud serverless projects {search,observability,security} create only showed generic flags (--input-file, --wait, etc.). The required body fields name and region_id had no flag equivalents, forcing users to write a JSON file just to set two scalars.

Root cause: the codegen API definitions for the three create commands had no body schema, so buildCommandSchema produced an empty z.looseObject({}) with no derived flags.

Fix: add a body: z.object({ name, region_id }) to each create definition. The existing buildCommandSchema -> extractSchemaArgs -> defineCommand pipeline handles the rest automatically, registering --name and --region-id flags and routing them into the POST body.

Before:

elastic cloud serverless projects search create --input-file /tmp/body.json --wait

After:

elastic cloud serverless projects search create --name cli-demo --region-id aws-us-east-1 --wait

Applies to all three project types: search, observability, security.

Test plan

• elastic cloud serverless projects search create --help shows --name and --region-id
• elastic cloud serverless projects observability create --help shows --name and --region-id
• elastic cloud serverless projects security create --help shows --name and --region-id
• --input-file still works (flags merge on top of JSON input)
• New unit test passes: exposes --name and --region-id flags on create project commands

[github-actions]

✅MegaLinter analysis: Success

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ COPYPASTE	jscpd	yes		no	no	0.98s
✅ REPOSITORY	gitleaks	yes		no	no	58.88s
✅ REPOSITORY	git_diff	yes		no	no	0.06s
✅ REPOSITORY	secretlint	yes		no	no	27.07s
✅ REPOSITORY	trivy	yes		no	no	18.33s
✅ TYPESCRIPT	eslint	2		0	0	3.72s

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[JoshMock]

LGTM. was the code generator updated to reflect the changes to the three APIs?

[github-actions]

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