component detection support regex to match files.

Hi component detection team,
Our public repo: [azure-cli](https://github.com/Azure/azure-cli) is using component detection in Azure DevOps pipelines.
in our repo, we have multiple reuqirment.$PYVERSION.$PLATFORM.txt file.
For example:
https://github.com/Azure/azure-cli/blob/dev/src/azure-cli/requirements.py3.Darwin.txt
https://github.com/Azure/azure-cli/blob/dev/src/azure-cli/requirements.py3.Linux.txt
https://github.com/Azure/azure-cli/blob/dev/src/azure-cli/requirements.py3.windows.txt

But component detection task only match requirements.txt file
[component-detection.log](https://github.com/microsoft/component-detection/files/8174117/component-detection.log)

Can you support `regex` while checking files.
Currently:
https://github.com/microsoft/component-detection/blob/main/src/Microsoft.ComponentDetection.Detectors/pip/PipComponentDetector.cs#L18
Suggetsion:
public override IList SearchPatterns => new List { "setup*.py", "requirements*.txt" };

Thanks.

Start in src/Microsoft.ComponentDetection.Detectors/pip/PipComponentDetector.cs, especially the SearchPatterns definition, and review the linked component-detection.log. Check detection against the Azure CLI files requirements.py3.Darwin.txt, requirements.py3.Linux.txt, and requirements.py3.windows.txt; done means these files are matched in addition to requirements.txt.

Written by the indexing model from the issue text.