feat(apikey): support custom metadata in token

[mattisonchao]

Motivation

Support custom metadata in the token.

[Copilot]

Pull Request Overview

This PR adds support for custom metadata in API key tokens. The change allows users to include custom key-value pairs in the API key configuration that will be embedded in the generated token.

• Adds customized_metadata field to both API key resource and data source schemas
• Updates dependency versions in go.mod
• Provides example usage in the terraform configuration

Reviewed Changes

Copilot reviewed 5 out of 6 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
go.mod	Updates various dependency versions to support the new functionality
examples/apikey/main.tf	Demonstrates usage of the new customized_metadata field
cloud/resource_apikey.go	Implements create and read operations for custom metadata
cloud/provider.go	Adds description for the new customized_metadata field
cloud/data_source_apikey.go	Adds custom metadata support to the data source

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[Copilot]

Pull Request Overview

Copilot reviewed 5 out of 6 changed files in this pull request and generated 3 comments.

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[Copilot]

Pull Request Overview

Copilot reviewed 5 out of 6 changed files in this pull request and generated no new comments.

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