[FEATURE] Download Stats

**Is your feature request related to a problem? Please describe.**

I want to know how many times version-checker is downloaded.

**Describe the solution you'd like**

A stat somewhere on the GitHub repo.

**Describe alternatives you've considered**

I don't know any I'll ask cert-manager team.

**Additional context**

N/A

CC @aidy

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**Message from the maintainers**:

If you wish to see this enhancement implemented please add a 👍 reaction to this issue! We often sort issues this way to know what to prioritize.

Start with the issue's request for download statistics and determine where a stat on the GitHub repository should appear and what download source it should use. Done means the expected statistic, its location, and the implementation scope are defined well enough to verify the feature.

由索引模型根据 Issue 内容生成。