build: components opt-in mechanism for packages

[leogr]

What type of PR is this?

/kind bug

Any specific area of the project related to this PR?

/area build

What this PR does / why we need it:

This PR allows for selectively declaring which components should be included in packages, using CPACK_INSTALL_CMAKE_PROJECTS.

It fixes the issue involuntarily introduced by falcosecurity/libs#247. All libs targets are now installing their artifacts in the installation location, so those files were caught by cpack and included in Falco packages. However, Falco does not need all those libraries and headers, since those dependencies are already bundled into the Falco executable. The new opt-in mechanism introduced in the Falco building system allows overcoming this issue.

All recent publish/docker-dev CI jobs were failing for that reason. For example, see
https://app.circleci.com/pipelines/github/falcosecurity/falco/2433/workflows/2d4d55c9-5528-4a0c-8fee-5b4ff168c484/jobs/22412
Note that the .deb installation failed because the package was trying to reinstall openssl files.

dpkg: error processing archive /var/cache/apt/archives/falco_0.31.1-81+8dd4bea_amd64.deb (--unpack):
 trying to overwrite '/usr/include/openssl/aes.h', which is also in package libssl-dev:amd64 1.1.1n-0+deb10u1
dpkg-deb: error: paste subprocess was killed by signal (Broken pipe)
Errors were encountered while processing:
 /var/cache/apt/archives/falco_0.31.1-81+8dd4bea_amd64.deb

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Another small issue was present and has been fixed by this. The LIBS_PACKAGE_NAME is not propagated in Falco, so all files weren't installed under the falcosecurity folder.
Although that's irrelevant for packages (because we are not including those files anymore), it still applies for make install.

/milestone 0.32.0

Does this PR introduce a user-facing change?:

NONE

[jasondellaluce]

/approve

Great fix Leo! 😍

[poiana]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jasondellaluce, leogr

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