docs(meshmetric): meshmetric profiles MADR

[slonka]

Don't have any other ideas, maybe someone reads this before weekend and can chip in some ideas.

closes: #8845

Also I can remove the files i added in assets/038/ - I used them to get the data for combined.txt - these are metrics combined from all dashboards available - and compare that to what's default in Envoy and in DD metadata list.

Checklist prior to review

• Link to relevant issue as well as docs and UI issues --
• This will not break child repos: it doesn't hardcode values (.e.g "kumahq" as a image registry) and it will work on Windows, system specific functions like syscall.Mkfifo have equivalent implementation on the other OS --
• Tests (Unit test, E2E tests, manual test on universal and k8s) --
  • Don't forget ci/ labels to run additional/fewer tests
• Do you need to update UPGRADE.md? --
• Does it need to be backported according to the backporting policy? (this GH action will add "backport" label based on these file globs, if you want to prevent it from adding the "backport" label use no-backport-autolabel label) --

[slonka]

Moving this back to draft until I make the adjustments.

[lahabana]

Some minor comments around syntax and implem but looking good!