Add service keys verification tool: fix for #1814

[bmerkle]

Add service keys verification tool and dotenv dependency

- Introduced a new script `testServiceKeys.ts` for validating service keys configured in the .env file.
- Implemented detailed checks for various services including Azure OpenAI, OpenAI, Microsoft Graph, and others.
- Added color-coded console output for better visibility of test results.
- Updated `package.json` to include `dotenv` as a development dependency for loading environment variables.
- fix for #1814

[robgruen]

The policy check failure will pass once #1813 is merged.

[robgruen]

The policy check failure will pass once #1813 is merged.

There was one of these in #1813, but there's one in the file you added as well. Can you please add the required header and give yourself the proper attribution.

[bmerkle]

I have read the CLA Document and I hereby sign the CLA

[bmerkle]

@robgruen I have signed the CLA and fixed the copyright (moved two first to lines)
The copyright was already there bud in line 3+4 because of the shell bang.
If there is anything i need to change, please let me know :-)

[robgruen]

@robgruen I have signed the CLA and fixed the copyright (moved two first to lines) The copyright was already there bud in line 3+4 because of the shell bang. If there is anything i need to change, please let me know :-)

Looks great, thank you! Just FYI - I just added EnvVars for GPT5 & 5.2 in case you felt like adding them to them this script at some point. Feel free to merge once all the checks pass.