[diff flamegraph] Add ability to filter the top table for new/removed/changed

[grafakus]

Feature description

Is your feature request related to a problem? Please describe.

It's sometimes difficult to find/see clearly what has increased.

Describe the solution you'd like

Adding filters to the top table for new/removed/changed lines.

Alternatives considered

Describe alternatives you've considered

-

Additional context

Slack context: https://raintank-corp.slack.com/archives/C048VSWPZ4P/p1728487513979629?thread_ts=1727361149.113309&cid=C048VSWPZ4P