Added option for embedding plantuml diagram as an object tag

[oneacik]

Follow up of: #2754 and #3597

Summary:
Added option to allow plantuml diagrams in svg format to be rendered as tags.

This PR does the following:

• Adds renderSvgAsObject option
• Adds branches in editor and server renderer

Tests:
✅ Links in plantuml work in rendered page when option is enabled, also with enabled Security Plugin.
❌ Links in plantuml don't work in editing mode - seem to be sanitised?. Also configuration options are not available in editor renderer.

Tested Using simple markdown:

# Header

```plantuml
:[[http:https://example.com TEST]];

```

[oneacik]

Closing for now as deploying on production leads to differen outcomes...