Add new git "count-contributors" command.

[gailazar300]

• The pull request is targeting the dev branch.
• The code has been validated to compile successfully by running go vet ./....
• The code has been formatted properly using go fmt ./....
• All static analysis checks passed.
• All tests have passed. If this feature is not already covered by the tests, new tests have been added.
• All changes are detailed at the description. if not already covered at JFrog Documentation, new documentation have been added.

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A new command that counts and aggregates information about the git provider contributors.

Depends on: jfrog/froggit-go#135

[orz25]

I think we can remove the comments at the end

[gailazar300]

The static analysis recognizes it as a secret- so I added it so it will be ignored.

[orz25]

you can delete this func

[gailazar300]

Have to implement it as part of the Command interface.

[orz25]

you can delete this func

[gailazar300]

Have to implement it as part of the Command interface.

[orz25]

Some of the errors start with capital letter and some with lower one.
Let's decide on one of the options and stay consistent.

[github-actions]

📦 Vulnerable Dependencies

✍️ Summary

SEVERITY	CONTEXTUAL ANALYSIS	DIRECT DEPENDENCIES	IMPACTED DEPENDENCY	FIXED VERSIONS	CVES
Medium	Not Covered	github.com/hashicorp/go-retryablehttp:v0.7.2 github.com/jfrog/froggit-go:v1.15.0 github.com/xanzy/go-gitlab:v0.95.2	github.com/hashicorp/go-retryablehttp v0.7.2	[0.7.7]	CVE-2024-6104

🔬 Research Details

Description:
go-retryablehttp prior to 0.7.7 did not sanitize urls when writing them to its log file. This could lead to go-retryablehttp writing sensitive HTTP basic auth credentials to its log file. This vulnerability, CVE-2024-6104, was fixed in go-retryablehttp 0.7.7.

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