Enable support for handling new command line arguments

[pdthummar]

Description

Updated python language worker to support handling new command line arguments with functions- prefix. Verified changes with Host debugging.

Fixes #1314

PR information

• [ ] The title of the PR is clear and informative.
• [ ] There are a small number of commits, each of which has an informative message. This means that previously merged commits do not appear in the history of the PR. For information on cleaning up the commits in your pull request, see this page.
• [ ] If applicable, the PR references the bug/issue that it fixes in the description.
• [ ] New Unit tests were added for the changes made and CI is passing.

Quality of Code and Contribution Guidelines

• [ ] I have read the contribution guidelines.

[codecov[bot]]

Codecov Report

Merging #1318 (fd35589) into dev (d0135b0) will decrease coverage by 52.62%. The diff coverage is 0.00%.

:exclamation: Current head fd35589 differs from pull request most recent head b235a1f. Consider uploading reports for the commit b235a1f to get more accurate results

@@             Coverage Diff             @@
##              dev    #1318       +/-   ##
===========================================
- Coverage   84.70%   32.08%   -52.62%     
===========================================
  Files          34       34               
  Lines        1922     1926        +4     
  Branches      366      366               
===========================================
- Hits         1628      618     -1010     
- Misses        224     1307     +1083     
+ Partials       70        1       -69     

Flag	Coverage Δ
unittests	32.08% <0.00%> (-52.57%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

Files Changed	Coverage Δ
azure_functions_worker/main.py	0.00% <0.00%> (ø)

... and 23 files with indirect coverage changes