Bug: crash if setup.cfg exists with no metadata section

[nikaro]

Bug

• I have read the comment above and have completed each step
• I have filled out the system info
• I have described the bug, filled in the expected outcome and the actual
  outcome including screenshots where appropriate

System info

• OS: Darwin ***** 22.3.0 Darwin Kernel Version 22.3.0: Mon Jan 30 20:38:37 PST 2023; root:xnu-8792.81.3~2/RELEASE_ARM64_T6000 arm64
• Version: licensecheck==2023.0.1

Describe the bug

It crashes if you have a setup.cfg file that does not contain [metadata] section (for example, with only flake8 configuration).

Expected outcome

List licenses used.

Actual outcome

Traceback (most recent call last):
  File "/Users/nicolas.karolak/Library/Caches/pypoetry/virtualenvs/silvr-app-EZRmeXuX-py3.10/bin/licensecheck", line 8, in <module>
    sys.exit(cli())
  File "/Users/nicolas.karolak/Library/Caches/pypoetry/virtualenvs/silvr-app-EZRmeXuX-py3.10/lib/python3.10/site-packages/licensecheck/__init__.py", line 90, in cli
    depsWithLicenses = get_deps.getDepsWithLicenses(
  File "/Users/nicolas.karolak/Library/Caches/pypoetry/virtualenvs/silvr-app-EZRmeXuX-py3.10/lib/python3.10/site-packages/licensecheck/get_deps.py", line 112, in getDepsWithLicenses
    myLiceTxt = packageinfo.getMyPackageLicense()
  File "/Users/nicolas.karolak/Library/Caches/pypoetry/virtualenvs/silvr-app-EZRmeXuX-py3.10/lib/python3.10/site-packages/licensecheck/packageinfo.py", line 157, in getMyPackageLicense
    metaData = getMyPackageMetadata()
  File "/Users/nicolas.karolak/Library/Caches/pypoetry/virtualenvs/silvr-app-EZRmeXuX-py3.10/lib/python3.10/site-packages/licensecheck/packageinfo.py", line 136, in getMyPackageMetadata
    if "license" in config["metadata"]:
  File "/opt/homebrew/Cellar/python@3.10/3.10.10_1/Frameworks/Python.framework/Versions/3.10/lib/python3.10/configparser.py", line 965, in __getitem__
    raise KeyError(key)
KeyError: 'metadata'

[nikaro]

I replaced the line 136 of file licensecheck/packageinfo.py with this and it worked:

if "metadata" in config.sections() and "license" in config["metadata"]:

[FredHappyface]

Fixed in https://github.com/FHPythonUtils/LicenseCheck/releases/tag/2023.1.1, thank you :)