feat: templates and app-protect signature-sets api

[vrmare]

Proposed changes

This MR is bringing API for 2 new features,

• templates (first milestone of a large feature)
• app-protect signature sets which is an increment to existing app-protect feature

Checklist

Before sharing this pull request, I completed the following checklist:

• I read the Contributing guidelines
• My branch adheres to the Git conventions
• My content changes adhere to the F5 NGINX Documentation style guide
• If my changes involve potentially sensitive information¹, I have assessed the possible impact
• I have waited to ensure my changes pass tests, and addressed any discovered issues

Footnotes

1. Potentially sensitive information includes personally identify information (PII), authentication credentials, and live URLs. Refer to the style guide for guidance about placeholder content. ↩

[github-actions]

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[github-actions]

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[vrmare]

I have hereby read the F5 CLA and agree to its terms

[vrmare]

recheck

[vrmare]

check

[mjang]

As intended. The API reference is now showing:

• Experimental endpoints for templates
• Signature sets for NAP