✨ New Probe: Memory safety

[balteravishay]

What kind of change does this PR introduce?

This PR provides the foundation for addressing issue #3736 by adding a new probe that checks if the code uses non memory safe practices for the repository languages.
The goal is to automate the detection of as many of the practices that the memory safety SIG provides under the Best Practices - Memory-Safe By Default Languages and the Best Practices - Non Memory-Safe By Default Languages guides.

• PR title follows the guidelines defined in our pull request documentation

What is the current behavior?

Today scorecard does not detect memory safe practices in it's core features or in any of the probes.

What is the new behavior (if this is a feature change)?**

Probe detects the following:

• for golang it detects if the code imports the unsafe package and points to the locations where it is used.

• for c# it detects if the projects allow for unsafe blocks which is a requirement for any project that would use any form of .Net unsafe code, pointer types, and function pointers

• Tests for the changes have been added (for bug fixes/features)

Which issue(s) this PR fixes

This code change addresses issue #3736 but does not close it (to be discussed)

Special notes for your reviewer

This code change and the implementation of it were discussed in scorecard community calls with @spencerschrock

Does this PR introduce a user-facing change?

For user-facing changes, please add a concise, human-readable release note to
the release-note

(In particular, describe what changes users might need to make in their
application as a result of this pull request.)

Added independent probe that checks for ecosystem specific non-memory safety practices in the codebase and flags them.

[codecov]

Codecov Report

Attention: Patch coverage is 79.28571% with 29 lines in your changes missing coverage. Please review.

Project coverage is 68.58%. Comparing base (353ed60) to head (7e27479).
Report is 104 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4499      +/-   ##
==========================================
+ Coverage   66.80%   68.58%   +1.77%     
==========================================
  Files         230      247      +17     
  Lines       16602    18583    +1981     
==========================================
+ Hits        11091    12745    +1654     
- Misses       4808     5003     +195     
- Partials      703      835     +132     

[balteravishay]

here are some repos to test the code:

go run main.go --repo github.com/microsoft/midi --probes memorysafe --format probe (.net unsafe code)
go run main.go --repo github.com/microsoft/winget-cli --probes memorysafe --format probe (.net safe code)
go run main.go --repo github.com/pkujhd/goloader --probes memorysafe --format probe (go unsafe code)
go run main.go --repo github.com/ossf/scorecard --probes memorysafe --format probe (go safe code)