x/telemetry/config: add counters for Vulncheck Codelens Usage

[ethanalee-work]

Summary

Targeting gopls@v0.21.0, we are adding telemetry to collect usage metrics for vulncheck codelens usage. These counters are necessary to understand vulncheck codelens usage and inform future decisions regarding tool support.

gopls/setting/codelens/vulncheck:{true,false} - user vulncheck codelens usage.

Proposed Config Change

https://go-review.googlesource.com/c/telemetry/+/705477

[gopherbot]

Change https://go.dev/cl/705477 mentions this issue: internal/chartconfig: update config to add vulncheck codelens counter

[ethanalee-work]

CC @findleyr

[gabyhelp]

Related Issues

• x/telemetry/config: add govulncheck counters #67678 (closed)

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