Updates ci-build.yml to deploy Commandline tool to Nuget

[MaggieKimani1]

This PR:

• Updates the current build.yml file with an additional build task for packaging the OpenApi.Tool, a commandline tool that enables processing of OpenAPI documents through validation, supports conversion for different file formats e.g from json to yaml and vice versa, and also supports filtering/slicing of OpenApi documents into smaller subset documents based on OperationIds and tags provided.
• This tool will then be published to Nuget as a package and leveraged across multiple projects such as DevX API, Kiota, Powershell, GE autocomplete etc

Fixes #630

[MIchaelMainer]

The NuGet package will be named Microsoft.OpenApi.Tool. Is there a more specific name for this tool?

[MaggieKimani1]

From my conversation with @darrelmiller, we're still brainstorming whether to retain it as is or find a more descriptive name for the tool.

[MaggieKimani1]

Maybe OpenApiCli.Tool @darrelmiller ?

[darrelmiller]

I'm very close to being convinced we should call this Microsoft.hidi as hidi is the Swahili word for Convert.

[MIchaelMainer]

Do either of you foresee this tool with future functionality that does something other than convert and validate? If this is foreseeable, then perhaps we leave it as is.

[darrelmiller]

Yes, it is going to slice. It may also convert from CSDL to OpenAPI. It may in the future be able to apply overlays. I ran the name "hidi" up the chain and we have support from PMs.

[MIchaelMainer]

So then, Microsoft.OpenApi.Hidi or Microsoft.Hidi? I'm more for the first, but think both are fine.

[darrelmiller]

I was planning the second. However, I have been asked to chat with the marketing folks to make sure they are ok with the hidi and kiota names. I'm going try and do that tomorrow.

[darrelmiller]

We can merge the PR and get approval before we push a release out.