Enhances 'spo page set' command Closes #4840

[mkm17]

Enhances 'spo page set' with --content property Closes #4840

Linked Issue #4840

It adds the '--content' property to the 'spo page set' command, enabling the updating of the 'CanvasContent1' property of a page.

The PR includes changes done in PR #4846 and changes recommended by @martinlingstuyl.
Closes #4840

[mkm17]

Hi, @martinlingstuyl Please review the PR related to #4846.
Regarding the comment about the test, I believe we cannot use a spy in this case. Initially, request.post returns page properties, which means we need to return it using stub, and then it is used to save the content.

Consequently, I placed an assert at the end of the test, following the same approach used in 'page-section-add.spec.ts'

Let me know what you think.

I hope that I rebased everything correctly :)

[martinlingstuyl]

Thanks @mkm17! I'll review this ASAP! But probably not this week,due to the upcoming v7 release.

[martinlingstuyl]

Looks great and works like a glove @mkm17

[martinlingstuyl]

Merged manually, thank you for the awesome work! 👏🎉