Enhance thread rendering/filtering for heatmaps & flamegraphs generated by jfrconverter

Describe the feature

Currently a user needs to use the "--threads" flag to include thread infomation in heatmaps & flamegraphs generated by the jfrconverter

jfrconv file.jfr file.html

After which if the user wants to filter in/out specific threads the --include --exclude flags are to be used

jfrconv file.jfr file.html --include {THREAD_NAME}

While this is helpful it's not that user friendly, as such I would suggested adding a filter on the flamegraph/heatmap JS/HTML side to quickly include/exclude specific threads, this filter can be a multi-select to quickly add/remove specific threads from the rendered graphs,

So a user can use jfrconv file.jfr file.html --threads after which the user can proceed to add/remove threads on the fly from the html via a newly created multi select button with all available threads ids/names rather than needing to do that manually or via CLI,

Use Case

Improve user experience when using flamegraph/heatmap with --threads

Proposed Solution

Create a multi-select button when --threads is used to easily remove/add threads from the rendering

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change