DocumentAssembler: Support for images

[michha]

In our organisation we use a custom Clippit version, where we took a Pull Request for the Open-Xml-PowerTools and applied it on Clippit.
I want to bring this feature to Clippit, so everyone can use it.

[sergey-tihon]

Thank you for this PR @michha !

Can you please briefly describe the feature here or add new docs page if it bring new API/capability. I do my best to document all significant changes.

[michha]

First I want to line out, that this contribution is not our own but from user @krembf that he tried to get into the Microsoft repo back in 2018 (see DocumentAssembler: Support for Images (#42) #236).
In December 2020 user @carzaza tried to get this changes into the fork from Eric White (see DocumentAssembler: Support for images #30).

Because of holidays it will take me some weeks to get a new docs page.

[sergey-tihon]

I've released code from this branch in v1.7.0-beta1
@michha can you please try it and confirm that it works for you?

[krembf]

Thanks for mentioning me, @michha!
In case this would be of any help with documentation, I'm attaching some details of the implementation (extracted from the conversation I had with the original owner of the PowerTools.
SupportForImages.docx

[michha]

I've released code from this branch in v1.7.0-beta1
@michha can you please try it and confirm that it works for you?

Our use cases are working with the beta release 👍

[sergey-tihon]

I've released it as v1.7.0 but it will be nice to add more docs for this as separate PR.