chore: Add template milestone 3 updates

[CodeMonkeyF5]

Proposed changes

!! ATTENTION !!
Do not merge until May 22

Config Templates — UI screens, submission persistence, and template management

New files

• template-detail-view.md — Documents the Template Detail page (Details tab): field descriptions, tmpl_ vs tmplv_ identifier guidance, and API reference.
• template-versions.md — Documents the Versions tab: data grid columns, delete constraints, and API references.
• template-submissions-view.md — Documents the Submissions view (Details tab): data grid columns and delete action.

Updated files

• one.json — Latest regenerated with x-nodoc removed for templates m3 APIs
• author-templates.md — Updated "Template Submission" glossary entry; added "Static include files" subsection documenting file_type: include; removed outdated external-file limitations; added "Template lifecycle management" section covering updateTemplateMetadata, patchTemplateMetadata (with draft→final irreversibility callout), and copyTemplate.
• import-templates.md — Updated archive structure to support static include files; updated tips section restoring the "avoid hidden/backup files" example (with .conf/.types in the correct example) and added a new tip for bundling include files.
• submit-templates.md — Removed "Current Limitations" section; split request into submission mode (preview_only=false, default) and preview mode (preview_only=true); added current limitation callout (targets limited to staged configs); added "Manage template submissions" section covering getTemplateSubmission, updateTemplateSubmission, updateSingleTemplateSubmission, and deleteTemplateSubmission.
• save-as-staged-config.md — Reframed: direct submission is now the recommended approach; preview-then-manual-create retained as the alternative workflow.
• add-multiple-services.md — Updated stale callout to reflect that submissions are now persistent and retrievable.

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 Technical Writing 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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[CodeMonkeyF5]

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

[syousF5]

I left one comment.

[JTorreG]

non-templated ??

[CodeMonkeyF5]

"non-templated" is referring to a file with contents that are not Go-template text(we use the extension .tmpl to determine that). Probably need to better wordsmith this.

[CodeMonkeyF5]

Have rephrased this as:

Templates can bundle static files that are deployed alongside the rendered NGINX configuration. Unlike template files (which use Go template syntax and the .tmpl extension), these files contain plain static content — such as NGINX configuration snippets or data files — and are not processed by the template engine. They are declared with file_type: include and are referenced from within the template using a standard NGINX include directive.