Calculate vector unit test coverage

[nitrocode]

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Use Cases

https://vector.dev/docs/reference/configuration/unit-tests/

Id like to set thresholds of unit test coverage such as 10% or 20% so when new vector configs are added without tests, if the coverage falls below the threshold, then the PR would be unable to be merged until the coverage is above the minimum again.

Attempted Solutions

N/A

Proposal

Allow calculating coverage as a percentage

References

• https://github.com/vectordotdev/vector/discussions/21552

Version

No response