Add Documentation for MPG SDK generation

[chidozieononiwu]

Add documentation for Management Plane Generation of SDKs using TypeSpec

[maririos]

in terms of cleaning up the doc, @raych1 :

• In which scenarios a service team will want to Generate Azure SDK for Go service packages in bulk ?
• Because of how processes have changed, section Include a new package in the SDK should be removed too (this was added 7 years ago :| )

[raych1]

@tadelesh can you revisit the above instructions and update them accordingly if they are out of date?

[tadelesh]

i suggested to remove Generate Azure SDK for Go service packages in bulk, Include a new package in the SDK and Generate Azure SDK for Go profiles. they are all out of date. also, it seems Generate an Azure-SDK-for-Go service package is out of date, but needs @jhendrixMSFT to confirm.

[jhendrixMSFT]

Sorry I don't see this section in the diff. Is the name correct?

[chidozieononiwu]

It's not part of the current diff https://github.com/Azure/azure-sdk-for-go/blob/main/documentation/code-generation.md#generate-an-azure-sdk-for-go-service-package

The question is whether it should be removed in this PR or not.

[jhendrixMSFT]

Got it. Yeah that's also out of date. Really it looks like that entire file needs to be rewritten.

[maririos]

As part of this effort, documentation should be improved to make sure we are guiding our customers to the right/updated process and avoid confusion as much as possible.
I added comments on other sections of the doc that can be removed/improved

[maririos]

Blocking until the document is updated with current information

[tadelesh]

i suggested to remove Generate Azure SDK for Go service packages in bulk, Include a new package in the SDK and Generate Azure SDK for Go profiles. they are all out of date. also, it seems Generate an Azure-SDK-for-Go service package is out of date, but needs @jhendrixMSFT to confirm.

[maririos]

@chidozieononiwu I have removed my review as @tadelesh helped us figuring out which sections you should delete. When you are back from vacation and update this, I will be on mine. I didn't want to block your PR :)