build: Add support for linking to shared falcosecurity libraries.

[apteryks]

• cmake/modules/falcosecurity-libs.cmake (USE_BUNDLED_FALCOSECURITY_LIBS): New option. Look for libsinsp via pkg-config unless it's enabled.
• userspace/sysdig/CMakeLists.txt: Adjust link directives accordingly. Remove extraneous zlib include.

[apteryks]

Note that this depends on https://github.com/falcosecurity/libs/pull/1842 to work.

[sonarqubecloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[github-actions[bot]]

This pull request has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[apteryks]

Not stale (that's an aggressive bot!).