Develop a Microsoft Stream macro

[oanalavinia]

Provide a macro that would add the possibility to embed Microsoft Stream videos.

Similar to the options provided by Microsoft Stream when sharing a video (by embed, as seen in the above image), the macro will provide parameters for:

• width
• height
• alignment
• autoplay
• show info
• start at

The macro could also consider the compatibility with https://marketplace.atlassian.com/apps/1224419/microsoft-stream-for-confluence?tab=overview&hosting=cloud

[oanalavinia]

Note that the Confluence bridge macro was not added since the import will fail for now, due to https://jira.xwiki.org/browse/CONFLUENCE-105