Private Link URL support

[Advitya17]

This pull request to rai_core_flask introduces changes related to configuring private links and generating correct URLs. The most important changes include adding a new parameter to the __init__ method of the FlaskHelper class to indicate whether it is a private link, and adding logic to construct the base_url and nbvm_origins in the __init__ method of the AzureNBEnvironment class based on the is_private_link flag.

Main changes:

• rai_core_flask/flask_helper.py: Added a new parameter is_private_link to the __init__ method of the FlaskHelper class, allowing the configuration of a flag indicating whether it is a private link or not.
• rai_core_flask/environments/azure_nb_environment.py: Added logic to construct the base_url and nbvm_origins in the __init__ method of the AzureNBEnvironment class based on the is_private_link flag, allowing for the generation of correct URLs.

This was done due to a typo in the shown URL format, which is supposed to have the port at the end for PL workspaces:

Description

Checklist

• I have added screenshots above for all UI changes.
• I have added e2e tests for all UI changes.
• Documentation was updated if it was needed.

[github-actions]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/agemawat/pl_url/dashboard/index.html

[github-actions]

https://responsibleai.blob.core.windows.net/pullrequest/microsoft/responsible-ai-toolbox/agemawat/pl_url/dashboard/index.html