CMake: Install and publish stripped binaries for Depends

[mj-xmr]

Using CMake's special install/strip target, which strips the final binaries while installing them into the installation directory. The directory is pointed by the CMAKE_INSTALL_PREFIX variable.

The below changes were measured for the unpacked artifacts, so nearest to the end-user's space consumption.

Target	Previous	Current	Change
Win64	63.7 MB	32.9 MB	-48.35%
x86_64 Linux	55.8 MB	44.4 MB	-20.43%
Cross-Mac	47.3 MB	41.6 MB	-12.05%

[selsta]

Hmm, here we will also have the same issue as we discussed with release binaries :/ These CI bins are mostly used if someone has a bug so stripping them will also be suboptimal in case they have to use gdb.

Seeing that Github storage is free anyway I would leave them like it is.

With #7683 it will be easy to strip them anyway if someone wants to do that locally.

[mj-xmr]

For the record: it's not about Github storage here, but about showing how much one can spare with the binaries, delivered to the end users on their hard drives.

@selsta also pointed out, that even the released binaries are sometimes used for debugging.
asymptotical OTOH said, that we could be delivering stripped binaries to the end user, but on demand (for debugging) the user could be supplied with the symbols themselves as a separate package. I confirm from my experience, that such a technique is being practised in the industry.

I'll leave this PR open in draft mode for now, so that everybody can learn and after a while, I will close it.

[hyc]

IMO, moving debug symbols into a separate package is just added hassle. An extra hoop for users to jump through before we can get meaningful diagnostics from a crash.