Add additional context to log_comment

[srikanthccv]

We have a very high-level context, such as the dashboard or alert, etc. This is still very broad; we can't answer whether the query is a dashboard variable query or what is the data source, is it a builder query/CH Query/PromQL query? What is the time range being queried (because it is acceptable to have higher duration for longer periods)? Add the following (and any additional) context

• data source
• panel type
• query type
• time range (<1h, <6h, <24h, <3d, <1w, <2w, <1m) (any better alternative options)?
• query source (panel, variable)
• ?