feat: fetch and create registered models

[ederign]

In this PR:

• GET /v1/model-registry/{model_registry_id}/registered_models
• POST /v1/model-registry/{model_registry_id}/registered_models
• HTTP client

Description

This commit sits on top of #128 . The diff of this PR is on f434394

With those two PRs, I can work on the frontend basic functionality (fetch and create registered models). \o/

How Has This Been Tested?

There are a few things that you need to do to test this:

• Create at least one service

kind: Service
apiVersion: v1
metadata:
  labels:
    app: metadata
  name: model-registry
spec:
  selector:
    component: model-registry-server
  type: ClusterIP
  ports:
  - port: 8080
    protocol: TCP
    appProtocol: http
    name: http-api
  - port: 9090
    protocol: TCP
    appProtocol: grpc
    name: grpc-api%

• Run MR backend via docker compose:

docker compose -f docker-compose.yaml up

• Forward service IP to docker compose

kubectl describe service/model-registry | grep IP
IP:                10.96.87.69

sudo ifconfig lo0 alias 10.96.87.69 # this will fw service IP to MR docker compose endpoint

• Run the app

make run
execute the curl calls described on README.MD

Merge criteria:

• The commits and have meaningful messages; the author will squash them after approval or will ask to merge with squash.
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).
• The developer has manually tested the changes and verified that the changes work

[ederign]

I'll rebase this PR asap.

[ederign]

@tarilabs we are ready to review!

[tarilabs]

I understand this poses the basis for create/list of RegisteredModel entity, plus handing of K8s Service representing a Model Registry, for BFF scope

/lgtm
/approve

[google-oss-prow]

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