Provide support for Proxy configuration when using Polaris CLI

[sfc-gh-spatel2]

Is your feature request related to a problem? Please describe.

The Polaris CLi is obtaiend and executed as follows:
git clone https://github.com/apache/polaris.git

cd polaris

./polaris
--base-url "${base_url}/polaris"
--client-id ${CLIENT_ID}
--client-secret ${CLIENT_SECRET}
catalogs
update "${catalogName}"
--region us-west-1

Some customers are behind a proxy and are not able to use this command.

Tested with export HTTPS_PROXY and HTTP_PROXY. but it does not pick this up.
The request fails and does not go through the proxy

Describe the solution you'd like

No response

Describe alternatives you've considered

No response

Additional context

No response

[MonkeyCanCode]

So currently the code doesn't allow proxy option to be pass in. I can add this support if there is no concern? I am able to build a local POC setup for this.
@flyrain @eric-maynard @HonahX

[MonkeyCanCode]

Sample PR for this request in case if we would want to support: #1115

Also, @sfc-gh-spatel2 can you check if that is what you are looking for and test with more proper setup?

[MonkeyCanCode]

@sfc-gh-spatel2 the above PR is merged. Please run your test to see if this fixed the problem you were facing before I close this one.