Add Pprof data to logs.zip

Use case: 

logs.zip should contain pprof data from server when requested

Acceptance criteria:

• When open <pmm>/logs.zip?pprof=1 logs.zip should be downloaded.
• When run `pmm-admin summary --pprof` logs.zip should be downloaded.

How to test:
1. Run PMM ManageD from Feature Build.

2. Enter DevContainer (make env).

3. Use CLI (pmm-admin) to acquire achieve :

$ pmm-admin summary --server-url=http://admin:admin@localhost/
$ pmm-admin summary --pprof --server-url=http://admin:admin@localhost/

4. Use HTTP endpoint to acquire achieve:

$ curl http://admin:admin@localhost/logs.zip -o web-logs.zip
$ curl http://admin:admin@localhost/logs.zip?pprof=1 -o web-logs-pprof.zip

4. Check that archive without "pprof" flag/parameter do not contain pprof data files.

5. Check that archive with "pprof" flag/parameter contain pprof data files.

6. Check that pprof is not corrupred - opened with viewer (ie. https://www.speedscope.app).