Adding the core libraries for diagnose_me tool.

[SinaChavoshi]

RFC - specially let me know if this seems like a good location. This PR only contains the core libraries will follow up with the cli runner and additional libraries in a separate PR

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This change is 

[hongye-sun]

Are you going to add CLI hooks in another PR? Will it require KFP package to add additional dependencies?

[SinaChavoshi]

Are you going to add CLI hooks in another PR?

Yes, I will be submitting that under a separate PR.

Will it require KFP package to add additional dependencies?

Not at this point. However in future it may if we switch to using google cloud APIs.

[Ark-kun]

/lgtm

[hongye-sun]

/lgtm

[SinaChavoshi]

/assign @Ark-kun

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[Ark-kun]

@googlebot I fixed it.

[googlebot]

CLAs look good, thanks!

ℹ️ Googlers: Go here for more info.

[Ark-kun]

/lgtm
/approve

[k8s-ci-robot]

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