Add flows should allow user to pick from a list of pipelines

Problem:

Currently in our import flows, when users opt in to add a pipeline they are only shown a single pipeline.

Admins want to be able to provide multiple pipelines for the user to select from.

Goal:

During our import and deploy flows, based on our current labeling mechanism of pipelines, allow the users to see a list of the available pipelines for them to choose from.

Why is it important?

Use cases:

1. <case>

Acceptance criteria:

1. As a user importing my code, I should be able to view all of the available pipelines which my admin has provided for me to choose from, so that I can select the pipeline I want.
2. As a user deploying an image, I should be able to view all of the available pipelines which my admin has provided for me to choose from, so that I can select the pipeline I want.
3. As a user, when importing or deploying, there should be a default pipeline selected.
4. As a user, when importing or deploying, as a pipeline is selected, I should be able to see the pipeline visualization.

Dependencies (External/Internal):

None

Design Artifacts:

This was previously designed, we should be able to utilize those older designs.
Design exploration doc : https://docs.google.com/document/d/1mKDSxHrSMf4aA7gCvA7QpfzxPDAi761mrP_nREabP0M/edit#

Note:

We should not deviate from the existing flow, yet provide a dropdown when there are multiple pipelines to choose from.