Linux collaterals in single build dir

[maloel]

Windows already does this -- so this does the same in Linux:

• Puts everything together, so it's easy to find and create artifacts
• Turns out, cmake --build . --config <> doesn't work in Linux!
  • See here: "For single configuration generators like Makefile Generators ... the configuration is specified at configure time by the CMAKE_BUILD_TYPE variable"
  • So I changed all the GHA runners to use it in Linux/Mac/Android
  • This can default to be empty, so the default is Release
• Had to change LibCI to expect collaterals in same place as Windows

Plus fixed some warnings on Linux...

Note that this has to be accompanied by additional PRs in other repos for our CI.

Tracked on [LRS-817]

[maloel]

See this build if you want to check anything:
https://rsjenkins.iil.intel.com/view/LRS/job/LRS_release_flow_pipeline/5246/

[maloel]

I'm rerunning libCI (manually) - found an issue with another script.
Note that once all the PRs go in, we have to update all branches with development right away or they likely won't pass libCI or Jenkins builds.

[maloel]

LibCI with all the branches set:
https://rsjenkins.iil.intel.com/job/LRS_libci_pipeline/5130/