docs: Add Microsoft Identity Provider

[vfiruz97]

Hi @marcelomendoncasoares,
This PR adds a doc for serverpod/serverpod#4716. Please review when you have a chance.

[marcelomendoncasoares]

Great work with the docs, @vfiruz97! A few suggestions for improvement.

[vfiruz97]

Thanks @marcelomendoncasoares, for a quick feedback. The comments are addressed. Ready for another review.

[marcelomendoncasoares]

LGTM! 🚀

[marcelomendoncasoares]

@vfiruz97 One thing that I just noticed: both this PR and #412 have the same numbering on the folder of the provider (both are adding 07-*). We could merge them and fix the order on other PR (if we wish to move Facebook to above GitHub, for example) or rearrange on the PRs so they land in order.

[vfiruz97]

Thanks @marcelomendoncasoares, appreciate your efforts. My suggestion, first merge this PR and then reorder in other PR.
But if we are good with the number 8 for the Facebook Idp, then simply I will change that to 8 and it will land well. But my suggestion, put the Facebook Idp up. Maybe in the number 4.

[marcelomendoncasoares]

Thanks @marcelomendoncasoares, appreciate your efforts. My suggestion, first merge this PR and then reorder in other PR. But if we are good with the number 8 for the Facebook Idp, then simply I will change that to 8 and it will land well. But my suggestion, put the Facebook Idp up. Maybe in the number 4.

Agree with the suggestion to move Facebook up to position 4. We should then also make the anonymous 1 (instead of 0 as it is now) in the same PR.