Adds boilerplate for client creation and empty address file

[deangalvin-cb]

What changed? Why?

This adds the boilerplate code to generate an oapi generated client, and adds an empty file for the external address functionality.

Qualified Impact

This is a first addition PR to add the framework of our SDK.

[cb-heimdall]

✅ Heimdall Review Status

Requirement	Status	More Info
Reviews	✅ 1/1	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 0 Sum 1

[cb-heimdall]

Review Error for marcin-cb @ 2024-08-13 14:27:33 UTC
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