[DO_NOT_MERGE] Static L0 Loader Support

[nrspruit]

Very early draft of the static Loader.

This works with the current version of the loader, but there is some versioning checks we will want to do.

Posting this to start the development process and start feedback.

[nrspruit]

example output:
scss_dev@nuc612dut2:~/level-zero-tests/build$ ./output/test_init_sysman
Context created static
[==========] Running 1 test from 1 test suite.
[----------] Global test environment set-up.
[----------] 1 test from SysmanInitTests
[ RUN ] SysmanInitTests.GivenCoreNotInitializedWhenSysmanInitializedThenzesDriverGetWorks
Context created context lib dynamic
Context created dynamic
loader created context lib dynamic
calling loader init static
ZE_LOADER_DEBUG_TRACE:Using Loader Library Path:
ZE_LOADER_DEBUG_TRACE:Loading Driver libze_intel_gpu.so.1
ZE_LOADER_DEBUG_TRACE:Loading Driver libze_intel_gpu_legacy1.so.1
ZE_LOADER_DEBUG_TRACE:Load Library of libze_intel_gpu_legacy1.so.1 failed with libze_intel_gpu_legacy1.so.1: cannot open shared object file: No such file or directory
ZE_LOADER_DEBUG_TRACE:Loading Driver libze_intel_vpu.so.1
ZE_LOADER_DEBUG_TRACE:Load Library of libze_intel_vpu.so.1 failed with libze_intel_vpu.so.1: cannot open shared object file: No such file or directory
ZE_LOADER_DEBUG_TRACE:Loading Driver libze_intel_npu.so.1
ZE_LOADER_DEBUG_TRACE:Load Library of libze_intel_npu.so.1 failed with libze_intel_npu.so.1: cannot open shared object file: No such file or directory
ZE_LOADER_DEBUG_TRACE:Tracing Layer Library Path: libze_tracing_layer.so.1
done loading functions
zelLoaderGetContext
calling static loader ddi init
ZE_LOADER_DEBUG_TRACE:check_drivers(flags=0(ZE_INIT_ALL_DRIVER_TYPES_ENABLED))
ZE_LOADER_DEBUG_TRACE:init driver libze_intel_gpu.so.1 zesInit(0(ZE_INIT_ALL_DRIVER_TYPES_ENABLED)) returning ZE_RESULT_SUCCESS
[ OK ] SysmanInitTests.GivenCoreNotInitializedWhenSysmanInitializedThenzesDriverGetWorks (29 ms)
[----------] 1 test from SysmanInitTests (29 ms total)

[----------] Global test environment tear-down
[==========] 1 test from 1 test suite ran. (29 ms total)
[ PASSED ] 1 test.
loader destroyed context lib dynamic
Context destroyed context lib dynamic
scss_dev@nuc612dut2:~/level-zero-tests/build$ ldd ./output/test_init_sysman
linux-vdso.so.1 (0x00007ffc7d5d8000)
libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f1d4a200000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f1d4a519000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f1d4a922000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f1d49e00000)
/lib64/ld-linux-x86-64.so.2 (0x00007f1d4a958000)

[lisanna-dettwyler]

Just a couple small comments from looking at it briefly

[lisanna-dettwyler]

Recommend the top level cmake option be named after the result rather than the behavior, like BUILD_STATIC

[nrspruit]

good point, that would differentiate.

[lisanna-dettwyler]

I think these should be going to stderr

[nrspruit]

agreed, I was going to convert the printfs to debug trace logs for the ones we determine useful.