[Cloud Security] Support form switching between single and org account selection

[JordanSh]

Summary

Add support for form switching in the CSPM integration based on the selected option between Single Account and AWS Organization. For this task, the focus is on validating the functionality of the Single Account option, while the AWS Organization form remains out of scope.

aws.account_type is a new form option variable introduced to the integration on: elastic/integrations#6682. It can equal on of two values: single_account or organization_account.

To ensure a complete validation process, the integration's template URL needs to incorporate support for the ACCOUNT_TYPE variable. This will enable users to be directed to the correct AWS page. Lack of support for this new URL variable from both ends would result in an incomplete validation.
@orestisfl is the point of contact in anything regarding the integration for this task.

Definition of done

Tasklist

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1. Add a form switch selector component
2. Ensure that on option select, aws.account_type is set to either single_account or organization_account
3. Include a text description for the account type selection (synch with the product team for final text)
4. Add support for ACCOUNT_TYPE variable in the integration's template URL
5. Validate the functionality of the Single Account form
6. Validate backward compatibility (e.g., disable AWS Organization when package version < 1.5.0, upgrade from 1.4.* to 1.5.*)
7. Implement unit tests

Out of scope

• AWS Organization form

Related

• 🎨 Figma
• 🎬 Epic
• [Cloud Security] [AWS Orgs] Add config option integrations#6682
• https://github.com/elastic/security-team/issues/7088