x/telemetry/config: add counters for vulncheck codelens usage

[ethanalee-work]

Summary

Targeting gopls@v0.21.0, we are adding telemetry to collect users' interactions with the vulncheck codelens. These counters are necessary to understand how users are interacting with the vulncheck codelens. In the next release, CodeLensRunGoVulncheck will be true by default - https://go-review.googlesource.com/c/tools/+/706935.

gopls/settings/codelenses/vulncheck answers the question of if users' are opting in or out of the vulncheck codelens via settings.

However, after CodeLensRunGoVulncheck:true is landed, then we must determine if users are using the codelens itself if enabled all the time.

Proposed Config Change

https://go-review.googlesource.com/c/telemetry/+/709957

[gopherbot]

Change https://go.dev/cl/709957 mentions this issue: internal/chartconfig: update config to add vulncheck codelens counter

[gabyhelp]

Related Issues

• x/telemetry/config: add counters for Vulncheck Codelens Usage #75546 (closed)
• x/telemetry/config: add counters for VulncheckMode options usage #75657
• x/telemetry/config: add counters for MCP server tool usage #75450 (closed)
• x/telemetry/config: add govulncheck counters #67678 (closed)
• x/telemetry/config: add counters for refactoring operations #74102 (closed)
• x/telemetry/config: completion usefulness counters #66367
• x/telemetry/config: add counters for MCP server usage #74341 (closed)
• x/telemetry/config: add collection for gopls/gotoolchain #68771 (closed)
• x/telemetry/config: enable data collection for crash/* counters, for gopls #65696 (closed)
• x/telemetry/config: collect gopls/telemetryprompt/accepted #68770 (closed)

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