Display specific commits to lines of code

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Proposal

When using blame or looking at git history users are trying to understand what the change was and why was it made https://gitlab.com/gitlab-org/ux-research/-/issues/2920.

But to get to this information requires many clicks to follow the path of commits (what changed) and eventually merge requests (to understand the why).

Could there be a way to retrieve a list of commits and related merge requests to selected lines of code? This would eliminate the flow to follow "view past blame" https://gitlab.com/gitlab-org/ux-research/-/issues/2920#observations.

With this list of commits viewing the changes of those lines over time is another goal of participants. This could have potential solutions as:

• comparing specific files at different commit points (related to Add the possibility to compare 2 different files (#22245)), and/or
• viewing the changes as a range diff (related to range-diff when comparing merge request versions (#24096))

Concept of line history	Concept of comparing files at different commit points