internal/civisibility: adds git tree upload feature

[tonyredondo]

What does this PR do?

This PR adds the Git tree upload feature to the CI Visibility library.

specs: https://datadoghq.atlassian.net/wiki/spaces/SDTEST/pages/3123348305/Intelligent+Test+Runner+in+CI+Visibility+Libraries#Git-tree-upload.1

Motivation

All CI Visibility libraries implement this feature, we were missing it.

Reviewer's Checklist

• Changed code has unit tests for its functionality at or near 100% coverage.
• System-Tests covering this feature have been added and enabled with the va.b.c-dev version tag.
• There is a benchmark for any new code, or changes to existing code.
• If this interacts with the agent in a new way, a system test has been added.
• Add an appropriate team label so this PR gets put in the right place for the release notes.
• Non-trivial go.mod changes, e.g. adding new modules, are reviewed by @DataDog/dd-trace-go-guild.

Unsure? Have a question? Request a review!

[pr-commenter]

Benchmarks

Benchmark execution time: 2024-10-16 17:43:01

Comparing candidate commit 11112fb in PR branch tony/civisibility-gitprovider-rework with baseline commit 51abc7b in branch main.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 59 metrics, 0 unstable metrics.

[ManuelPalenzuelaDD]

LGTM